abacus
abacus: n. abacws

abbreviate
abbreviate: talfyrru

abbreviated
abbreviated: adj. talfyredig

abbreviation
abbreviation: n. byrfodd, abbreviation: n. talfyriad

able
able: adj.sint. galluog

abolish
abolish: diddymu

abolished
abolished: adj. dirymedig

abort
abort: erthylu

about
about: pr. oddeutu, about: pr. ynghylch, about: pr. ynglyn â

above
above: pr. uwchben, above: pr. uwchlaw

abridged
abridged: adj. crynoëdig

abrogate
abrogate: diffrwytho

absence
absence: n. absenoldeb

absent
absent: adj. absennol

absolute
absolute: adj. absoliwt

absorb
absorb: amsugno

abstain
abstain: ymwrthod

abstain totally
abstain totally: llwyrymatal, abstain totally: llwyrymwrthod

absurdity
absurdity: n. gwrthuni

abundance
abundance: n. helaethrwydd, abundance: n. toreth, abundance: n. digonedd

abuse
abuse: n. camddefnydd, abuse: n. camdriniaeth

academic
academic: n. academydd, academic: adj. academaidd

academy
academy: n. academi

accelerate
accelerate: cyflymu

acceleration
acceleration: n. cyflymiad

accelerator
accelerator: n. cyflymydd

accent
accent: n. acen

accentuate
accentuate: acennu

acceptable
acceptable: adj. cymeradwy, acceptable: adj. derbyniol

access
access: n. cyrchiad

accessibility
accessibility: n. hygyrchedd

accessible
accessible: adj. cyrchadwy, accessible: adj. hygyrch

accident
accident: n. damwain

acclimatise
acclimatise: hinsoddi

accompany
accompany: cydganlyn, accompany: cydgerdded, accompany: cyfeilio

accomplish
accomplish: cyflawni, accomplish: gorchestu

accord
accord: cydgordio

according to
according to: pr. yn ôl

accountability
accountability: n. atebolrwydd

account
account: n. cyfrif

accounting
accounting: n. cyfrifeg, accounting: adj. cyfrifyddol

accreditation
accreditation: n. achrediad

accredited
accredited: adj. achrededig

accrued
accrued: adj. cronedig

accuracy
accuracy: n. cywirdeb

accusation
accusation: n. cyhuddiad

accuse
accuse: cyhuddo

accuse falsely
accuse falsely: camgyhuddo

acetic
acetic: adj. asetig

acetylsalicylic
acetylsalicylic: adj. asetylsalisylig

achievable
achievable: adj. cyraeddadwy

achievement
achievement: n. camp, achievement: n. cyflawniad, achievement: n. cyrhaeddiad

achiever
achiever: n. cyrhaeddwraig

acid
acid: n. asid

acidify
acidify: asideiddio

acknowledge
acknowledge: arddel

acknowledgement
acknowledgement: n. cyfaddefiad

acoustics
acoustics: n. clybodeg

acquaint oneself
acquaint oneself: ymgydnabyddu

acquiesce
acquiesce: ymfodloni

acre
acre: n. erw, acre: n. acer

acronym
acronym: n. llythrenw

across
across: pr. ar draws

act
act: n. deddf, act: actio

act as clerk to
act as clerk to: clercio

act in harmony
act in harmony: cyd-dynnu

action
action: n. gweithred

active
active: adj. gweithredol

activity
activity: n. gweithgaredd, activity: n. gweithgarwch

actor
actor: n. actor

actress
actress: n. actores

act stubbornly
act stubbornly: cyndynnu

act with guile
act with guile: dichellu

acute
acute: adj. aciwt

adapt
adapt: addasu, adapt: cyfaddasu, adapt: cymhwyso, adapt: cymoni

adaptation
adaptation: n. addasiad

adapter
adapter: n. addasydd, adapter: n. addaswr

adaptive
adaptive: adj. ymaddasol

add
add: adio, add: ychwanegu

addition
addition: n. ychwanegiad

additional
additional: adj. ychwanegol

additive
additive: n. ychwanegyn

address
address: n. cyfeiriad, address: annerch

adhere
adhere: glynu

adherence
adherence: n. glyniad

adjacent
adjacent: adj. cyfagos

adjective
adjective: n. ansoddair

adjudicate
adjudicate: dyfarnu

adjudication
adjudication: n. beirniadaeth

adjudicator
adjudicator: n. beirniad

adjust
adjust: ymaddasu

administration
administration: n. gweinyddiaeth, administration: n. gweinyddiaeth

administrative
administrative: adj. gweinidogol, administrative: adj. gweinyddol

administrator
administrator: n. gweinyddwr

admiralty
admiralty: n. morlys

admiration
admiration: n. edmygedd

admire
admire: edmygu

admission
admission: n. mynediad

admit
admit: addef, admit: cyfaddef

adopt
adopt: mabwysiadu

adopted
adopted: adj. mabwysiedig

adoption
adoption: n. mabwysiad

adoptive
adoptive: adj. mabwysiadol

adorn
adorn: cywreinio, adorn: pincio

adorn oneself
adorn oneself: ymdrwsio

adult
adult: n. oedolyn

adultery
adultery: n. godineb

advance information
advance information: n. blaenwybodaeth

advantage
advantage: n. mantais

advantageous
advantageous: adj. llesol, advantageous: adj. manteisiol

adventure
adventure: n. anturiaeth, adventure: n. antur

advertise
advertise: hysbysebu

advertisement
advertisement: n. hysbyseb

advertiser
advertiser: n. hysbysebwr

advise
advise: cynghori

adviser
adviser: n. ymgynghorydd, adviser: n. ymgynghorwr

advisory
advisory: adj. cynghorol, advisory: adj. ymgynghorol

advocacy
advocacy: n. eiriolaeth

advocate
advocate: n. eiriolwr

aeronautics
aeronautics: n. aeronoteg

aeroplane
aeroplane: n. awyren

aesthetics
aesthetics: n. estheteg

affair
affair: n. mater

affect
affect: affeithio

affirmative
affirmative: adj. cadarnhaol

afflict
afflict: trallodi

affordability
affordability: n. fforddiadwyedd

affordable
affordable: adj. fforddiadwy

afford
afford: fforddio

afforestation
afforestation: n. coedwigaeth

after
after: pr. wedi, after: pr. ar ôl

afternoon
afternoon: n. pnawn, afternoon: n. prynhawn

against
against: pr. yn erbyn

age
age: n. oed, age: n. oes, age: n. oedran, age: heneiddio

aged
aged: adj. oedrannus

agency
agency: n. asiantaeth

agenda
agenda: n. agenda

agent
agent: n. asiant

aggressive
aggressive: adj. ymosodol

agitate
agitate: cynhyrfu

agnosticism
agnosticism: n. anffyddiaeth

agreeable
agreeable: adj. dymunol

agree
agree: cydladd, agree: cydsynio, agree: cytuno

agreed
agreed: adj. cytûn, agreed: adj. cytundebol, agreed: adj. cytunedig

agreements
agreements: n. cytundeb

agricultural
agricultural: adj. amaethyddol

agriculture
agriculture: n. amaeth, agriculture: n. amaethyddiaeth

a hundred times
a hundred times: n. canwaith

ailment
ailment: n. anhwylder

aim
aim: amcanu, aim: anelu

air
air: n. aer

airport
airport: n. awyrborth

alarm
alarm: n. larwm, alarm: alaru

album
album: n. albwm

alchemy
alchemy: n. alcemeg

alcohol
alcohol: n. alcohol

algebra
algebra: n. algebra

algorithm
algorithm: n. algorithm

alias
alias: n. ffugenw

align
align: alinio

alignment
alignment: n. aliniad

a little
a little: n. ychydig

alive
alive: adj. bywiol

all
all: adj. cwbl, all: adj. cwbwl, all: adj. holl

allegation
allegation: n. honiad

alleged
alleged: adj. honedig

alleviate
alleviate: esmwytháu, alleviate: esmwytho

alliance
alliance: n. cynghrair

alliterate
alliterate: cyseinio

alliteration
alliteration: n. cyseinedd

alliterative poem
alliterative poem: n. cywydd

alliterative stanza
alliterative stanza: n. englyn

allocation
allocation: n. dyraniad

allowable
allowable: adj. caniataol

allow
allow: caniatáu

allowance
allowance: n. lwfans

allowed
allowed: adj. caniataol

all-wales
All-Wales: adj. Cymru-Gyfan

ally
ally: cynghreirio

ally oneself
ally oneself: ymgyfuno, ally oneself: ymgynghreirio

almond
almond: n. almon

along
along: pr. ar hyd

alpha
alpha: n. alffa

alphabet
alphabet: n. gwyddor

alphablending
alphablending: n. alffagyfuniad

alphanumeric
alphanumeric: adj. alffarifol

alternate
alternate: eiledu

alternating
alternating: adj. eiledol

alternative
alternative: adj. amgen

altitude
altitude: n. uchder

amass
amass: cronni

amazed
amazed: adj. syn

amazement
amazement: n. syndod

amber
amber: n. gwefr

ambiguous
ambiguous: adj. amwys, ambiguous: adj. mwys

ambition
ambition: n. uchelgais

ambitious
ambitious: adj. uchelgeisiol

ambulance
ambulance: n. ambiwlans

ambush
ambush: rhagod

amendment
amendment: n. gwelliant

american
American: adj. Americanaidd

among
among: pr. ymysg, among: pr. ymhlith

amortisation
amortisation: n. amorteiddiad

amount
amount: n. rhywfaint

ample
ample: adj. helaeth

amuse
amuse: difyrru

amusing
amusing: adj. difyr

analogue
analogue: adj. analog

analyse
analyse: dadansoddi

analyser
analyser: n. dadansoddydd

analysis
analysis: n. dadansoddiad

anatomy
anatomy: n. anatomeg

anchor
anchor: angori

ancient
ancient: adj. hynafol

and
and: cnjcoo. a

anecdote
anecdote: n. anecdot

an eleven
an eleven: n. unarddeg

angel
angel: n. angel

angle
angle: n. ongl

anglicise
anglicise: seisnigeiddio, anglicise: seisnigo

anglo-welsh
Anglo-Welsh: adj. Eingl-Gymreig

angry
angry: adj.sint. dig

animal
animal: n. anifail

animate
animate: adj. animeiddio, animate: bywhau, animate: bywiogi

animated
animated: adj. bywluniedig

animation
animation: n. animeiddiad, animation: n. bywluniad, animation: n. bywluniad

anise
anise: n. anis

annihilate
annihilate: difodi

annotate
annotate: anodi

announce
announce: hysbysu

announcement
announcement: n. hysbysiad

annoying
annoying: adj. annifyr, annoying: adj. diflas, annoying: adj. diflas

annual
annual: adj. blynyddol

anoint
anoint: eneinio, anoint: iro

anonymous
anonymous: adj. dienw

answerable
answerable: adj. atebol

answer
answer: n. ateb, answer: ateb

anticipate
anticipate: blaenbrofi

anticlockwise
anticlockwise: adj. gwrthglocwedd

anti-decentralisation
anti-decentralisation: adj. wrth-ddatganoli

antidote
antidote: n. gwrthwenwyn

antisocial
antisocial: adj. gwrthgymdeithasol

anti-welsh
anti-Welsh: adj. gwrth-Gymraeg, anti-Welsh: adj. gwrth-Gymreig

anti-welsh feeling
anti-Welsh feeling: n. gwrth-Gymreictod

any
any: det.ind.sp. unrhyw

anyone
anyone: prn. unrhywun

aound
aound: pr. o amgylch, aound: pr. o gylch

apathy
apathy: n. difaterwch

apex
apex: n. apig

apologise
apologise: ymddiheuro

apostrophe
apostrophe: n. collnod

apparent
apparent: adj. ymddangosiadol

appeal
appeal: n. apeliad, appeal: n. apeliadau, appeal: n. apêl, appeal: apelio

appearance
appearance: n. gwedd, appearance: n. ymddangosiad

appearances
appearances: n. ymddangosiadau

appear
appear: ymddangos

appease
appease: dyhuddo

appellant
appellant: n. apelydd, appellant: n. apeliwr

append
append: atodi

appendix
appendix: n. atodiad

applet
applet: n. rhaglennig

applicant
applicant: n. ceisydd

application
application: n. cymhwysiad, application: n. cais

appoint
appoint: apwyntio, appoint: penodi

appointed
appointed: adj. penodedig

appointment
appointment: n. apwyntiad, appointment: n. penodiad

appointments
appointments: n. apwyntiadau

appreciate
appreciate: gwerthfawrogi

appreciation
appreciation: n. gwerthfawrogiad

apprentice
apprentice: prentisio

apprenticeship
apprenticeship: n. prentisiaeth

approach
approach: n. ymagwedd, approach: agosáu, approach: cyrchu, approach: dynesáu, approach: dynesu, approach: nesáu, approach: nesu

appropriate
appropriate: adj. addas, appropriate: adfeddu

appropriateness
appropriateness: n. addasrwydd

approval
approval: n. cymeradwyaeth

approve
approve: cymeradwyo

approximately
approximately: adj. rhyw

approximation
approximation: n. brasamcan

april
April: n. Ebrill

aquamarine
aquamarine: adj. morlas

arbitrary
arbitrary: adj. mympwyol

arbitrate
arbitrate: cymrodeddu

arboriculture
arboriculture: n. coedyddiaeth

arc
arc: n. arc

archaeological
archaeological: adj. archaeolegol, archaeological: adj. archeolegol

archaeology
archaeology: n. archaeoleg

architecture
architecture: n. pensaernïaeth

archive
archive: n. archif, archive: archifo

archivist
archivist: n. archifydd

ardent
ardent: adj. pybyr

area
area: n. arwynebedd

areas
areas: n. arwynebeddau

argentina
Argentina: n. Ariannin

argue
argue: dadlau

argument
argument: n. dadl, argument: n. ymresymiad

aristocracy
aristocracy: n. pendefigaeth

arithmetical
arithmetical: adj. rhifyddol

arithmetic
arithmetic: n. arithmetig

arm
arm: n. braich, arm: arfogi

armed
armed: adj. arfog

army
army: n. byddin

around
around: pr. o gwmpas

arrange
arrange: lluniaethu, arrange: trefnu

arrange jointly
arrange jointly: cyd-drefnu

arrangement
arrangement: n. trefniad, arrangement: n. trefniant

array
array: n. arae

arrest
arrest: arestio

arrival
arrival: n. dyfodiad

arrive
arrive: cyrraedd

arrow
arrow: n. saeth

art
art: n. celf, art: n. celfyddyd

article
article: n. erthygl

article of merchandise
article of merchandise: n. nwydd

artificial
artificial: adj. artiffisial, artificial: adj. gosod

artist
artist: n. artist, artist: n. arlunydd

artistic
artistic: adj. artistig, artistic: adj. celfyddydol

as
as: pr. megis, as: adj. cyn, as: adj. mor

asbestos
asbestos: n. asbestos

ascend
ascend: esgyn

ascending
ascending: adj. esgynnol

asceticism
asceticism: n. asgetiaeth

a second time
a second time: n. eildro

ask
ask: gofyn, ask: holi

as late
as late: adj. hwyred

as long
as long: adj. cyhyd

as much
as much: adj. cymaint

aspect
aspect: n. agwedd

aspiration
aspiration: n. dyhead

assassinate
assassinate: bradlofruddio

assemble
assemble: ymgynnull

assembler
assembler: n. cydosodydd

assembly
assembly: n. cydosodiad, assembly: n. cynulliad

assert
assert: heuru

assess
assess: asesu, assess: symio

assessment
assessment: n. arfarniad, assessment: n. asesiad

assessor
assessor: n. asesydd

assessors
assessors: n. aseswyr

asset
asset: n. ased, asset: n. ased

assiduity
assiduity: n. dyfalwch

assiduous
assiduous: adj. diwyd

assignment
assignment: n. aseiniad, assignment: n. neilltuad

assimilate
assimilate: cymathu

assimilation
assimilation: n. cymathiad

assistant
assistant: n. cynorthwyydd, assistant: adj. cynorthwyol

assist
assist: cymortháu

assistive
assistive: adj. cynorthwyol

associate
associate: cymdeithasu

associate oneself
associate oneself: ymgyfathrachu, associate oneself: ymgyfeillachu

associate with
associate with: cyfeillacha

association
association: n. cymdeithas, association: n. cysylltiad

assume the shape of
assume the shape of: ymrithio

assumption
assumption: n. rhagdyb

astonish
astonish: synnu

astound
astound: syfrdanu

astrology
astrology: n. astroleg

astronomy
astronomy: n. seryddiaeth

asylum
asylum: n. lloches, asylum: n. noddfa

asymmetric
asymmetric: adj. anghymesur

asynchronous
asynchronous: adj. anghydamseredig

atmosphere
atmosphere: n. atmosffer, atmosphere: n. awyrgylch

atomic
atomic: adj. atomig

atomise
atomise: atomeiddio

atomism
atomism: n. atomiaeth

atrocious
atrocious: adj. dybryd

atrophy
atrophy: n. annhyfiant

attached
attached: adj. atodedig, attached: adj. ynghlwm

attachment
attachment: n. ymlyniad

attack
attack: n. ymosodiad, attack: ymgyrchu, attack: ymorchestu, attack: ymosod

attacker
attacker: n. ymosodwr

attempt
attempt: n. ymgais

attend conferences
attend conferences: cynadledda

attendee
attendee: n. cyfarfodwr

attention
attention: n. sylw

at the end of
at the end of: pr. ymhen

attitude
attitude: n. ymagweddiad

attorneyship
attorneyship: n. atwrneiaeth

attract
attract: atynnu, attract: denu

attraction
attraction: n. atyniad

attractive
attractive: adj. deniadol

attribute
attribute: n. priodoledd, attribute: n. priodwedd, attribute: priodoli, attribute: tadogi

auction
auction: n. arwerthiant, auction: arwerthu

audible
audible: adj. clywedig

audience
audience: n. cynulleidfa

audiologist
audiologist: n. awdiolegydd

audit
audit: n. archwiliad

auditor
auditor: n. archwiliwr

august
August: n. Awst

authentication
authentication: n. dilysiad

authenticity
authenticity: n. dilysrwydd

author
author: n. awdures, author: n. awdur

authorisation
authorisation: n. awdurdodiad

authorise
authorise: awdurdodi

authorised
authorised: adj. awdurdodedig

authoritarian
authoritarian: adj. awdurdodaidd

authoritarianism
authoritarianism: n. awdurdodaeth

authoritative
authoritative: adj. awdurdodol

authority
authority: n. awdurdod

autism
autism: n. awtistiaeth

auto
auto: adj. awto

automatic
automatic: adj. awtomatig, automatic: adj. awtomatig, automatic: adj. otomatig

automation
automation: n. awtomatiaeth

autonomy
autonomy: n. ymreolaeth

autumn
autumn: n. hydref

auxiliary
auxiliary: adj. ategol

availability
availability: n. argaeledd

avenge
avenge: ymddial

average
average: n. cyfartaledd, average: adj. cyfartalog

avocado
avocado: n. afocado

avoid
avoid: osgoi, avoid: ymochel

awake
awake: adj. effro

awareness
awareness: n. arwybod

awdio
awdio: adj. awdio

awesome
awesome: adj. aruthrol

awkward
awkward: adj. chwithig

axis
axis: n. echelin

azure
azure: adj. asur

babble
babble: baldorddi, babble: preblan

baby
baby: n. baban, baby: n. babi

babysitter
babysitter: n. gwarchodwr

back
back: n. cefn, back: bacio

backbite
backbite: absennu

backgammon
backgammon: n. tabler

background
background: n. cefndir

backlist
backlist: n. ôlrestr

backspace
backspace: n. olfwlch

backtrace
backtrace: n. olrheiniad, backtrace: n. ôl-drywydd

backwards compatibility
backwards compatibility: n. ôl-gydnawsedd

backwards compatible
backwards compatible: adj. ôl-gydnaws

bacteriology
bacteriology: n. bacterioleg

bad
bad: adj.sint. gwallus, bad: adj.sint. llwgr, bad: adj.sint. drwg

bag
bag: n. bag, bag: bagio

bait
bait: baetio

bake
bake: crasu, bake: pobi

balance
balance: n. cydbwysedd, balance: n. mantol, balance: cloriannu, balance: cydbwyso, balance: cyfantoli, balance: mantoli, balance: tafoli

balance-sheet
balance-sheet: n. mantolen

balancing-scales
balancing-scales: n. clorian

baldness
baldness: n. moelni

ballast
ballast: n. balast

ball
ball: n. pêl

ballistics
ballistics: n. balisteg

balsam
balsam: n. triagl

band
band: n. band

bank
bank: n. banc, bank: bancio

bankrupt
bankrupt: adj. methdalwrus

bankruptcy
bankruptcy: n. methdaliad

bank statement
bank statement: n. cyfriflen

bank up
bank up: anhuddo

baptise
baptise: bedyddio

barbarise
barbarise: barbareiddio

barbarism
barbarism: n. barbariaeth

bar
bar: n. bar, bar: bario

bargain
bargain: n. bargen, bargain: bargeinio

baritone
baritone: n. baritôn

bark
bark: cyfarth

barrel
barrel: n. casgen

barter
barter: ffeirio

base
base: n. bôn, base: n. sail, base: seilio, base: sylfaenu

based
based: adj. seiliedig

basis
basis: n. sylfaen

basket
basket: n. basged

bass
bass: adj. bas

baste
baste: brasbwytho

bat
bat: n. bat, bat: n. ystlum, bat: batio

batch
batch: n. swp

bath
bath: n. bath

batter
batter: ffatio

battery
battery: n. batri

battle
battle: n. brwydr

bay
bay: n. bae

bayonet
bayonet: bidogi

be able to
be able to: vbmod. gallu, be able to: vbmod. medru

be accustomed
be accustomed: arferu

beach
beach: n. traeth

bead
bead: n. glain

be advantageous
be advantageous: llesio, be advantageous: llesu

be a journalist
be a journalist: newyddiadura

be an author
be an author: llenora

bean
bean: n. ffeuen

bear
bear: arweddu

bear fruit
bear fruit: cnydio

bearing
bearing: n. cyfeiriant

beat
beat: cledru, beat: curo, beat: pwyo

beautiful
beautiful: adj. prydferth

beautify
beautify: harddu, beautify: mireinio, beautify: prydferthu

be
be: vbser. bod

because of
because of: pr. o achos, because of: pr. oblegid

become accustomed
become accustomed: cynefino

become a member
become a member: ymaelodi

become bald
become bald: moeli, become bald: moelio

become bitter
become bitter: chwerwi

become brittle
become brittle: breuo, become brittle: crinellu

become confused
become confused: hurtio

become cruel
become cruel: creuloni

become empty
become empty: ymwacáu

become estranged
become estranged: ymddieithrio

become fat
become fat: breisgio

become fine
become fine: hinoni

become fragile
become fragile: breuhau

become gentle
become gentle: mwyneiddio

become hard
become hard: corni, become hard: ymgaledu

become hoarse
become hoarse: crygu

become ill again
become ill again: atglafychu

become incarnate
become incarnate: ymgnawdoli

become ingrained
become ingrained: greddfu

become lukewarm
become lukewarm: claearu, become lukewarm: claeru

become miserly
become miserly: crintachu

become mouldy
become mouldy: llwydo

become night
become night: nosi

become obstinate
become obstinate: cildynnu

become restless
become restless: anesmwytho

become rough
become rough: gerwino

become round
become round: crynhau

become scabby
become scabby: crachennu

become serious
become serious: difrifoli

become stiff
become stiff: cyffio

become verdant
become verdant: glasu, become verdant: gwanwyno

be compatible
be compatible: cydsefyll

be confident
be confident: hyderu

be contemporaneous with
be contemporaneous with: cyfoedi, be contemporaneous with: cyfoesi

be contemporary
be contemporary: cydoesi

bed
bed: n. gwely

be dejected
be dejected: pendrymu

bedroom
bedroom: n. llofft

beer
beer: n. cwrw

befall
befall: damwain, befall: damwynio

be fed up with
be fed up with: diflasu

before
before: pr. cyn

befoul
befoul: caglo, befoul: caglu

be fruitful
be fruitful: ffrwytho

beg
beg: begian, beg: cardota

beget
beget: cenhedlu, beget: planta

begin
begin: dechrau

beginning
beginning: n. dechrau

behave arrrogantly
behave arrrogantly: rhyfygu

behave
behave: bihafio, behave: ymarweddu, behave: ymddwyn

behave coyly
behave coyly: mursennu

behave wantonly
behave wantonly: anlladu, behave wantonly: ymdrythyllu

behavioural
behavioural: adj. ymddygiadol

behaviour
behaviour: n. ymddygiad

be hypocritical
be hypocritical: rhagrithio

beige
beige: adj. llwydfelyn

be in a tizzy
be in a tizzy: ffrwcsio

be indignant
be indignant: diclloni

be in heat
be in heat: cynheica, be in heat: llawdio, be in heat: marchio, be in heat: llodi

be jubilant
be jubilant: gorfoleddu

belch
belch: bwldagu

belief
belief: n. cred

believe
believe: coelio, believe: credu

believe wrongly
believe wrongly: camgoelio, believe wrongly: camgredu

believing
believing: adj. grediniol

belittle
belittle: bychanu

bell
bell: n. cloch

bellow
bellow: breferu, bellow: bugunad

belly
belly: n. bol, belly: n. bola

belong
belong: perthyn

belong to
belong to: deirydu

be motionless
be motionless: delwi

benchmark
benchmark: n. meincnod, benchmark: meincnodi

bend
bend: plygu

beneficial
beneficial: adj. buddiol

beneficiary
beneficiary: n. budd-ddeiliad

benefit
benefit: n. budd, benefit: n. lles, benefit: manteisio

benevolence
benevolence: n. eluse garwch

benumb
benumb: sythu

be overprotective
be overprotective: gorofalu

bequeath
bequeath: cymynnu, bequeath: cymynroddi

be radioactive
be radioactive: ymbelydru

berate
berate: tafodi

be ravenously hungry
be ravenously hungry: llwgu

beseech
beseech: atolygu, beseech: deisyf, beseech: deisyfu, beseech: eidduno

be sick and tired of
be sick and tired of: syrffedu

beside
beside: pr. wrth, beside: pr. wrth ochr, beside: pr. wrth ymyl

besmirch
besmirch: trybaeddu

bestir oneself
bestir oneself: ymysgwyd

bestow
bestow: dyroddi

be stubborn
be stubborn: ystyfnigo

bet
bet: n. bet, bet: betio

be tepid
be tepid: mwyglo

be thrifty
be thrifty: tolio

be too dependent
be too dependent: gorddibynnu

betray
betray: bradu, betray: bradychu

betroth
betroth: dyweddïo

between
between: pr. rhwng

be well-versed in literature
be well-versed in literature: llenydda

bewilder
bewilder: delffu, bewilder: ffwndro, bewilder: mwydro, bewilder: pendroni

bewitch
bewitch: cyfareddu, bewitch: rheibio

bible
Bible: n. Beibl, Bible: n. Beibl

bibliographic
bibliographic: adj. llyfryddol

bibliography
bibliography: n. llyfryddiaeth

bid
bid: bidio

bidirectional
bidirectional: adj. deugyfeiriol

bigamy
bigamy: n. dwywreigiaeth

big
big: adj.sint. mawr

bike
bike: n. beic

bilingual
bilingual: adj. dwyieithog

bilingualism
bilingualism: n. dwyieithrwydd

bill
bill: n. bil, bill: bilio

billion
billion: n. biliwn

billionth
billionth: adj. biliynfed

billow
billow: tonni

bimonthly
bimonthly: adj. deufisol

binary
binary: adj. deuaidd

bin
bin: n. bin

bind
bind: bancawio, bind: creffynnu, bind: rhwymo

binding
binding: n. rhwymiad

binomial
binomial: adj. binomaidd

biodiversity
biodiversity: n. bioamrywiaeth

biographical
biographical: adj. bywgraffyddol

biological
biological: adj. biolegol

biomedical
biomedical: adj. biomeddygol

bird
bird: n. aderyn

birth
birth: n. genedigaeth

birthday
birthday: n. penblwydd, birthday: n. pen-blwydd

biscuit
biscuit: n. bisged, biscuit: n. bisgïen

bisect
bisect: dwyrannu

bishop
bishop: n. esgob

bishopric
bishopric: n. esgobaeth

bisque
bisque: adj. bisg

bit
bit: n. did

bite
bite: brathu, bite: dantu

bitmap
bitmap: n. didfap

bitter
bitter: adj. chwerw

bitterness
bitterness: n. chwerwder

bitumen
bitumen: n. pyg

blackberry
blackberry: mwyara

blacken
blacken: duo, blacken: pardduo

blackmail
blackmail: n. arian bygwth

blade of grass
blade of grass: n. gwelltyn

blame
blame: beio

blaspheme
blaspheme: cablu

blaster
blaster: n. ffrwydrydd

blather
blather: paldaruo

blaze
blaze: ffaglu, blaze: fflamychu, blaze: ymfflamychu

bleach
bleach: cannu

bleat
bleat: brefu

bleed
bleed: gwaedu

bleep
bleep: n. bib

bleeper
bleeper: n. bipiwr

bless
bless: bendithio

blessing
blessing: n. bendith

blind
blind: adj.sint. dall, blind: dallu

blind copy
blind copy: n. dallgopi

blindness
blindness: n. dallineb

blinking
blinking: adj. amrantol

blister
blister: chwysigennu, blister: pothellu

blockade
blockade: n. gwarchae

block
block: n. bloc, block: blocio

block up
block up: topi, block up: topio

blood
blood: n. gwaed

blot
blot: blotio

blow
blow: n. ergyd, blow: chwythu, blow: utganu

blue
blue: adj. glas

blueprint
blueprint: n. glasbrint, blueprint: blaengynllunio

blunder about
blunder about: bustachu

blunt
blunt: adj.sint. di-fin

blush
blush: cochi, blush: gwrido

board
board: byrddio

boast
boast: brolio

boat
boat: n. cwch

body
body: n. corff

bogeyman
bogeyman: n. bwgan

boil
boil: berwi

boiling-point
boiling-point: n. berwbwynt

bold
bold: adj.sint. hy

bolt
bolt: bolltio, bolt: prenio

bombard
bombard: cyflegru

bombast
bombast: n. chwyddiaeth

bomb
bomb: bomio

bond
bond: n. bond

bone
bone: n. asgwrn

bonfire
bonfire: n. coelcerth, bonfire: n. coelcerth

bonus
bonus: n. bonws

book
book: n. llyfr, book: bwcio, book: llyfru

booklet
booklet: n. llyfryn

bookmark
bookmark: n. dalennod

bookseller
bookseller: n. llyfrwerthwr

boolean
Boolean: adj. booleaidd

bootup
bootup: n. cychwyniad

border
border: n. ffin, border: n. border, border: ymylu

borderline
borderline: adj. ffiniol

border on
border on: ffinio

bore
bore: ebillio

boredom
boredom: n. diflaster

borough
borough: n. bwrdeistref

borrow
borrow: benthycio

borrow jointly
borrow jointly: cydfenthyg

botany
botany: n. llysieueg

bother
bother: boddro

bottle
bottle: costrelu, bottle: potelu

bottom
bottom: n. gwaelod

bounce
bounce: bownsio, bounce: sboncio, bounce: ysboncio

boundary
boundary: n. ffin

bow
bow: ymgrymu, bow: ymostwng

bowl
bowl: bowlio, bowl: powlio

box
box: n. bocs, box: n. blwch, box: bocsio, box: paffio

box on the ears
box on the ears: bonclustio

boy
boy: n. bachgen

bracket
bracket: n. cromfach

bracketed
bracketed: adj. cromfachog

brag
brag: bragio, brag: rhodresu, brag: ymffrostio

brake
brake: brecio

branch
branch: n. cangen, branch: canghennu

brand
brand: n. gwneuthuriad, brand: n. brand, brand: llawnodi

brandish
brandish: ffrydio

brave
brave: adj.sint. dewr

breach
breach: bylchu

breach of contract
breach of contract: n. torcytundeb

bread
bread: n. bara

breadth
breadth: n. lled

break
break: n. toriad, break: n. egwyl, break: torri

breakfast
breakfast: n. brecwast, breakfast: brecwasta

break into fragments
break into fragments: malurio

break into smithereens
break into smithereens: trafriwio

breast
breast: n. bron

breath
breath: n. anadl

breathe
breathe: anadlu

breathing
breathing: n. anadliad

breed
breed: bridio

breed maggots
breed maggots: cynrhoni

breed worms
breed worms: pryfedu

breeze
breeze: n. awel

brew
brew: berweddu, brew: bragu, brew: bryweddu, brew: macsu

brew up
brew up: darllaw

bribe
bribe: llwgrwobrwyo

brick
brick: n. bricsen, brick: bricio

bridge
bridge: n. pont, bridge: pontio

bridle
bridle: ffrwyno

bright
bright: adj.sint. disglair, bright: adj.sint. llachar

brighten
brighten: gloywi, brighten: hoywi

brightness
brightness: n. disgleirdeb, brightness: n. gloywder

britain
Britain: n. Prydain

british
British: adj. Prydeinig

brittle
brittle: adj.sint. bregus

broad
broad: adj.sint. llydan

broadcast
broadcast: n. darllediad, broadcast: darlledu

broadcaster
broadcaster: n. darlledwr

broaden
broaden: eangu

broil
broil: briwlio, broil: brwylio

broken
broken: adj. toredig

bronze
bronze: n. efydd, bronze: adj. efydd

brood
brood: gori

brook
brook: n. nant

brother
brother: n. brawd

brown
brown: adj. brown

browse
browse: brigbori

browser
browser: n. porwr

bruise
bruise: cleisio

brush
brush: n. brws, brush: brwsio

brutalise
brutalise: anifeileiddio

brutality
brutality: n. cieidd-dra

bubble
bubble: n. swigen, bubble: byrlymu

buckle
buckle: byclo, buckle: byclu, buckle: sigo

budge
budge: chwimio

budgetary
budgetary: adj. cyllidebol

budget
budget: n. cyllideb

buffer
buffer: n. byffer

bug
bug: n. nam

build a corn-rick
build a corn-rick: helmu

build
build: n. adeiladiad, build: adeiladu

building
building: n. adeilad

built
built: adj. adeiledig

bulb
bulb: n. bwlb

bulk
bulk: n. crynswth

bullet
bullet: n. bwled

bulletin
bulletin: n. bwletin

bullock
bullock: n. eidion

bundle
bundle: byrnio, bundle: byrnu, bundle: sypio, bundle: sypynio, bundle: sypynnu

bungalow
bungalow: n. byngalo

bungle
bungle: bwnglera, bungle: dallgeibio

burden
burden: n. baich

bureaucracy
bureaucracy: n. biwrocratiaeth

burled
burled: adj. ceinciog

burn
burn: llosgi

burn incense
burn incense: arogldarthu, burn incense: mygdarthu

burnish
burnish: caboli

burnt
burnt: adj. llosg

burn to ashes
burn to ashes: creisioni

burrow
burrow: turio, burrow: twrian, burrow: twrio, burrow: tyrchio, burrow: tyrchu

bursary
bursary: n. bwrsariaeth

burst
burst: byrstio

bury
bury: claddu

bus
bus: n. bws

business
business: n. busnes

busy
busy: adj.sint. prysur

but
but: cnjcoo. ond

butcher
butcher: chwalpio, butcher: cigyddio

butter
butter: n. menyn

button
button: n. botwm, button: botymu

buy
buy: prynu

buyer
buyer: n. prynwr

buzz
buzz: sïo, buzz: suo

by
by: pr. erbyn

byte
byte: n. beit, byte: n. beit

by the minute
by the minute: adj. munudol

cable
cable: n. cebl

cache
cache: n. celc

cached
cached: adj. celciedig

cackle
cackle: crecio

cafe
cafe: n. caffe

café
café: n. caffi

calculation
calculation: n. cyfrifiad

calculator
calculator: n. cyfrifiannell

calendar
calendar: n. calendr

calibrate
calibrate: calibro

callback
callback: n. adalwad

call
call: n. galwad, call: n. galw, call: galw

callee
callee: n. galwai

caller
caller: n. galwr

calorie
calorie: n. calori

camera
camera: n. camera

camouflage
camouflage: ffugliwio

campaign
campaign: n. ymgyrch

campaigner
campaigner: n. ymgyrchwr

camp
camp: n. gwersyll, camp: campio, camp: gwersylla, camp: pabellu

campus
campus: n. campws

can
can: n. can

cancel
cancel: canslo

cancer
cancer: n. canser

candidacy
candidacy: n. ymgais

candidate
candidate: n. ymgeisydd

candle
candle: n. cannwyll

canonise
canonise: canoneiddio

canter
canter: rhygyngu

canvas
canvas: n. cynfas

canvass
canvass: canfasio

capability
capability: n. gallu

capacity
capacity: n. capasiti, capacity: n. gallu, capacity: n. cynhwysedd

cap
cap: capio

capital
capital: n. cyfalaf, capital: n. prifddinas

capital-intensive
capital-intensive: adj. dwysgyfalafol

capitalism
capitalism: n. cyfalafiaeth

capital letter
capital letter: n. priflythyren

captain
captain: n. capten

captcha
captcha: n. dalwedd

caption
caption: n. egluryn

captivate
captivate: hudo

captive
captive: adj. caeth

carbon
carbon: n. carbon

carbonise
carbonise: carboneiddio

car
car: n. car

cardboard
cardboard: n. cardfwrdd

card
card: n. cerdyn

cardiac
cardiac: adj. cardiag, cardiac: adj. cardiolegol

cardinal
cardinal: adj. prifol

cardiologist
cardiologist: n. cardiolegydd

care
care: n. gofal

career
career: n. gyrfa, career: adj. gyrfaol

careful
careful: adj. gofalus

carer
carer: n. gofalydd, carer: n. gofalwr

caress
caress: llochi, caress: tolachu

caret
caret: n. lleolnod

carol
carol: caroli

carouse
carouse: gloddesta

carpenter
carpenter: n. saer

carpet
carpet: carpedu

carriage
carriage: n. cerbyd

carriage return
carriage return: n. dychwelydd

carrier
carrier: n. cludydd, carrier: n. cariwr

carry
carry: cario, carry: cludo

cart
cart: cartio, cart: trolio

cartesian
cartesian: adj. cartesaidd

cartilage
cartilage: n. madruddyn

cartoon
cartoon: n. cartwn

cartridge
cartridge: n. cetrisen

carve
carve: cerfio, carve: naddu

cascade
cascade: rhaeadru

cascading
cascading: adj. rhaeadrol, cascading: adj. rhaeadrol

cassette
cassette: n. casét

cast
cast: castio

castle
castle: n. castell

castrate
castrate: disbaddu, castrate: ysbaddu

catalog
catalog: n. catalog

catalogue
catalogue: catalogio

catalyst
catalyst: n. catalydd

catarrh
catarrh: n. gormwyth

cat
cat: n. cath

catch birds
catch birds: adara

catcher
catcher: n. daliwr

catch mice
catch mice: llygota

catch minnows
catch minnows: pilcota

catch moles
catch moles: gwaddota

catch salmon
catch salmon: samona

catechise
catechise: holwyddori

category
category: n. categori

cater
cater: arlwyo

caterpillar
caterpillar: n. lindys

cathode
cathode: n. cathod

caulk
caulk: calcio, caulk: pygu

causality
causality: n. achosiaeth

causation
causation: n. achosiant

cause
cause: n. achos, cause: achosi, cause: peri

cave
cave: n. ogof

cavity
cavity: n. ceudod

cd
CD: n. crynoddisg

ceaseless
ceaseless: adj. diatal

celebrate
celebrate: dathlu

celebration
celebration: n. dathliad

cell
cell: n. cell

celtic
Celtic: adj. Celtaidd

census
census: n. cyfrifiad

centigrade
centigrade: n. canradd

centigram
centigram: n. centigram

centilitre
centilitre: n. centilitr

centimeter
centimeter: n. centimetr

central
central: adj. canolog

centralise
centralise: canoli, centralise: creiddio

centralised
centralised: adj. canoledig

central region
central region: n. canolbarth

centre
centre: n. canolfan

centred
centred: adj. canoledig

century
century: n. canrif

cereal
cereal: adj. ydol

ceremony
ceremony: n. seremoni

certain
certain: adj. diau, certain: adj. sicr

certainty
certainty: n. sicrwydd

certificate
certificate: n. tystysgrif, certificate: n. tystysgrif

certificated
certificated: adj. tystysgrifedig

certified
certified: adj. ardystiedig

chafe
chafe: rhuglo

chain
chain: n. cadwyn, chain: cadwyno

chair
chair: n. cadair, chair: cadeirio

chairman
chairman: n. cadeirydd

challenge
challenge: n. sialens, challenge: n. her, challenge: herio, challenge: sialensio

challenging
challenging: adj. heriol

chamber
chamber: n. siambr

championship
championship: n. pencampwriaeth

chance
chance: n. hap, chance: n. siawns, chance: siawnsio

change
change: n. newidiad, change: newid

changed
changed: adj. newidiedig

channel
channel: n. sianel

chant
chant: corganu, chant: llafarganu

chapel
chapel: n. capel

chapter
chapter: n. pennod

character
character: n. cymeriad, character: n. nod

characterise
characterise: nodweddu

characteristic
characteristic: adj. nodweddiadol

characters
characters: n. cymeriadau

charge a toll
charge a toll: tolli

charge
charge: n. traul, charge: gwefru, charge: sarsio, charge: siarsio

charitable
charitable: adj. elusennol

charity
charity: n. elusen

chart
chart: n. siart

chartered
chartered: adj. siartredig

chastise
chastise: cystwyo

chat
chat: n. sgwrs, chat: sgwrsio

cheap
cheap: adj.sint. rhad

cheapness
cheapness: n. rhadlondeb

cheat
cheat: cafflo, cheat: coegio, cheat: hocedu

check
check: n. gwiriad, check: gwirio

checker
checker: n. cywirydd

cheese
cheese: n. caws, cheese: n. cosyn

chemical
chemical: adj. cemegol

chemistry
chemistry: n. cemeg

cheque
cheque: n. siec

cherish
cherish: coleddu, cherish: ymserchu

chess
chess: n. gwyddbwyll

chest
chest: n. cist

chew
chew: cnoi

chief
chief: n. pennaeth

child
child: n. plentyn

chiropodist
chiropodist: n. ciropodydd

chirp
chirp: grillianu

chocolate
chocolate: n. siocled

choice
choice: n. dewis

choir
choir: n. côr

choke
choke: tagu, choke: ymdagu

choose
choose: dewis

chooser
chooser: n. dewisydd

chop
chop: trychu

chord
chord: n. cord

christmas
Christmas: n. Nadolig

chronic
chronic: adj. cronig

chronicle
chronicle: croniclo

chronology
chronology: n. amseryddiaeth

church
church: n. eglwys

churn
churn: corddi

cigarette
cigarette: n. sigaren

cinema
cinema: n. sinema

cipher
cipher: n. seiffr

circle
circle: n. cylch, circle: cylchu

circles
circles: n. cylchoedd

circular
circular: n. cylchlythyr

circularise
circularise: cylchlythyru

circulate
circulate: cylchredeg

circulating
circulating: adj. cylchredol

circulation
circulation: n. cylchrediad

circumcise
circumcise: enwaedu

circumference
circumference: n. cylchedd, circumference: n. cylchyn

circumstance
circumstance: n. amgylchiad

cirque
cirque: n. cwm

citizen
citizen: n. dinaswr, citizen: n. dinesydd

citizenship
citizenship: n. dinasyddiaeth

city
city: n. dinas

civic
civic: adj. dinesig

civil
civil: adj. sifil

civilisation
civilisation: n. gwareiddiad

civilise
civilise: dynoli, civilise: gwareiddio

claimant
claimant: n. hawliwr

claim
claim: n. hawliad, claim: hawlio, claim: honni

clamour
clamour: n. twrf, clamour: cnulio, clamour: crochlefain, clamour: dadwrdd, clamour: dadyrddu

clamp
clamp: clampio

clank
clank: cloncio

clap
clap: clapio

clarification
clarification: n. eglurhad

clarity
clarity: n. eglurder

class
class: n. dosbarth

classical
classical: adj. clasurol

classic
classic: n. clasur, classic: adj. clasurol

clatter
clatter: clocsio

clause
clause: n. cymal

claw
claw: crafangu

clean
clean: adj.sint. glân, clean: glanhau

cleanness
cleanness: n. glendid

clean thoroughly
clean thoroughly: llwyrlanhau

cleanup
cleanup: n. glanhad

clear
clear: adj.sint. clir, clear: adj.sint. eglur, clear: clirio

clear land
clear land: llanerchu

clench
clench: clensio

clerk
clerk: n. clerc

clever
clever: adj.sint. clyfar

cliché
cliché: n. ystrydeb

click
click: n. clic, click: clicio

client
client: n. cleient, client: n. dibynnydd

climate
climate: n. hinsawdd

climax
climax: n. uchafbwynt

climb
climb: dringo

climb mountains
climb mountains: mynydda

clinical
clinical: adj. clinigol

clinician
clinician: n. clinigwr

clinometer
clinometer: n. clinomedr

clipboard
clipboard: n. clipfwrdd

clip
clip: clipio

clip hedge
clip hedge: barbio

cloak
cloak: cochli, cloak: mantellu

clock
clock: n. cloc, clock: clocio

clockwise
clockwise: adj. clocwedd

clone
clone: n. clôn

close
close: adj.sint. agos, close: cau

closed
closed: adj. caeedig

closure
closure: n. cloadur

clot
clot: talchu, clot: tolchennu

clothe
clothe: dilladu

cloud
cloud: n. cwmwl

clout
clout: clatsio, clout: clewtio

clover
clover: n. meillionen, clover: n. meillion

club
club: n. clwb, club: clybio

cluck
cluck: clwcio

clue
clue: n. clem

clumsiness
clumsiness: n. bwn glerwch

clumsy
clumsy: adj. chwithig

clutch
clutch: cynghraffu

coagulate
coagulate: ceulo

coalition
coalition: n. clymblaid

coalminer
coalminer: n. glöwr

coastal
coastal: adj. arfordirol

coast
coast: n. arfordir

co-author
co-author: n. cyd-awdur

cobble
cobble: cobleru

co-chairman
co-chairman: n. cydgadeirydd

cock
cock: cocio

cocoa
cocoa: n. coco

code
code: n. cod, code: n. cod, code: codio

co-educate
co-educate: cydaddysgu

coefficient
coefficient: n. cyfernod

co-exist
co-exist: cydfodoli

coffee
coffee: n. coffi

coffin
coffin: n. arch

co-finance
co-finance: cydariannu

cognitive
cognitive: adj. gwybyddol

cohabit
cohabit: cytal

cohere
cohere: cydlynu, cohere: cyflynu

cohesion
cohesion: n. cydlyniad

cohesive
cohesive: adj. cydlynol, cohesive: adj. cydlynus

coil
coil: dolennu, coil: torchi

coincide
coincide: cydgyffwrdd, coincide: cydredeg

coin
coin: bathodi, coin: bathu

cola
cola: n. cola

cold
cold: adj.sint. oer

collapse
collapse: ymollwng

collate
collate: coladu, collate: colato

colleague
colleague: n. cydweithiwr

collect
collect: casglu, collect: hel, collect: lloffa

collection
collection: n. casgliad

collections
collections: n. casgliadau

collective
collective: adj. torfol

collector
collector: n. casglwr

college
college: n. coleg

collide
collide: gwrthdaro

collision
collision: n. gwrthdrawiad

collude
collude: cydgynllunio

colocate
colocate: cydleoli

colon
colon: n. gorwahannod

colonise
colonise: gwladychu

colour
colour: n. lliw, colour: cluro, colour: coluro, colour: lliwio

colourful
colourful: adj. lliwgar

column
column: n. colofn

combat
combat: n. ymladd

comb
comb: cribo

combination
combination: n. cyfuniad

combine
combine: cyfuno

combined
combined: adj. cyfunol

come
come: dod, come: dod

comfort
comfort: n. cysur, comfort: cysuro, comfort: diddanu

comma
comma: n. atalnod

command
command: n. gorchymyn, command: gorchymyn

commemorate
commemorate: coffáu

commensurate
commensurate: adj. cymesur

commentate
commentate: sylwebu

comment
comment: n. sylw, comment: n. sylwad

commerce
commerce: n. masnach

commercial
commercial: adj. marsiandïol, commercial: adj. masnachol

commercially sensitive
commercially sensitive: adj. masnachol-sensitif

commisioner
commisioner: n. comisiynwr

commission
commission: n. comisiwn, commission: comisiynu

commission jointly
commission jointly: cydgomisiynu

commit
commit: traddodi

commitment
commitment: n. ymrwymiad

commit oneself
commit oneself: ymrwymo

commit perjury
commit perjury: camdystiolaethu

committed
committed: adj. ymrwymedig

committee
committee: n. pwyllgor

common
common: n. comin, common: adj. cyffredin

common denominator
common denominator: n. cyfenwadur

commonwealth
commonwealth: n. cymanwlad

communicate
communicate: cyfathrebu, communicate: cymuno

communication
communication: n. cyfathrebiad, communication: n. cyfathrebiad

communications
communications: n. cyfathrebiaeth

communism
communism: n. comiwnyddiaeth

community
community: n. cymuned, community: adj. cymunedol

commute
commute: cymudo

company
company: n. cwmni

comparable
comparable: adj. cymaradwy

comparative
comparative: adj. cymharol

comparator
comparator: n. cymharydd, comparator: n. cymharydd

compare
compare: cyffelybu, compare: cymharu

comparison
comparison: n. cymhariaeth

compass
compass: n. cwmpas

compassionate
compassionate: adj. tosturiol

compatibility
compatibility: n. cytunedd

compatible
compatible: adj. cydnaws

compel
compel: gorfodi

compensate
compensate: digolledu

compensation
compensation: n. cydadferiad, compensation: n. iawndal

compensation payment
compensation payment: n. iawndaliad

compete
compete: cydgeisio, compete: cystadlu, compete: ymbrofi

competence
competence: n. cymhwysedd

competition
competition: n. cystadleuaeth

competitive
competitive: adj. cystadleuol

competitor
competitor: n. cystadleuwr

compilation
compilation: n. cydlyniad

complain
complain: achwyn, complain: cwynfan, complain: cwynfanu, complain: cwyno, complain: eingo

complaint
complaint: n. cwyn

complementary
complementary: adj. cyflenwol

complete
complete: adj. cyflawn, complete: adj. llwyr, complete: cwblhau, complete: cwpla, complete: cwpláu, complete: gorffen

completely
completely: adj. hollol

completeness
completeness: n. cyflawnrwydd

completion
completion: n. cwblhad

complex
complex: n. cymhlygyn, complex: adj. cymhleth, complex: adj. cymhlyg

complexity
complexity: n. cymhlethdod

compliance
compliance: n. cydymffurfiad

compliant
compliant: adj. cydymffurfiol

complicate
complicate: cymhlethu

compliment
compliment: n. canmoliaeth, compliment: moesgyfarch

component
component: n. cydran

compose
compose: cyfansoddi

compose englynion
compose englynion: englynu

compose lyrics
compose lyrics: telynegu

composer
composer: n. cyfansoddydd

compose verse
compose verse: cynganeddu

composite
composite: adj. cyfansawdd

composition
composition: n. cyfansoddiad

compost
compost: compostio

compound
compound: adj. cyfansawdd

comprehend
comprehend: amgyffred

comprehension
comprehension: n. amgyffred

comprehensive
comprehensive: adj. cynhwysfawr

compress
compress: cywasgu, compress: dwyso

compressed
compressed: adj. cywasg, compressed: adj. cywasgedig

compression
compression: n. cywasgiad, compression: n. cywasgedd

compressor
compressor: n. cywasgydd

compromise
compromise: n. cyfaddawd, compromise: cyfaddawdu, compromise: cyfaddodi

compulsory
compulsory: adj. gorfodol

compute
compute: cyfrifiannu

computer
computer: n. cyfrifiadur, computer: adj. cyfrifiadurol

computerise
computerise: compiwtereiddio, computerise: cyfrifiaduro

computer system
computer system: n. cysawd

computing
computing: n. cyfrifiadureg

concatenation
concatenation: n. cydgadwyniad

concave
concave: adj. ceugrwm

conceal
conceal: celcio, conceal: celcu, conceal: celu, conceal: dirgelu

conceal oneself
conceal oneself: ymgelu, conceal oneself: ymguddio

conceal partially
conceal partially: darnguddio

conceive
conceive: beichiogi, conceive: cyfebru, conceive: cyfebu

concentrate
concentrate: canolbwyntio

concentrated
concentrated: adj. crynodedig

concept
concept: n. cysyniad

concern
concern: n. gofid

concerned
concerned: adj. pryderus

concerning
concerning: pr. am ben

concert
concert: n. cyngerdd

concession
concession: n. goddefiad

conciliation
conciliation: n. cymod

conclude
conclude: dibennu, conclude: diweddu

conclusion
conclusion: n. canlyniad, conclusion: n. casgliad

concrete
concrete: n. concrit, concrete: adj. diriaethol

concur
concur: cydgroesi

condemn
condemn: condemnio

condensed
condensed: adj. cywasgedig

conditional
conditional: adj. amodol

condition
condition: n. amod, condition: n. cyflwr, condition: cyflyru

conduct
conduct: cyfarwain, conduct: dargludo

conduct oneself
conduct oneself: ymagweddu

conduit
conduit: n. cwndid

cone
cone: n. côn

confer
confer: cyflafareddu, confer: cynadleddu

conference
conference: n. cynhadledd

confess
confess: cyffesu

confidence
confidence: n. ymddiriedaeth, confidence: n. hyder

confident
confident: adj. hyderus

confidential
confidential: adj. cyfrinachol

confidentiality
confidentiality: n. cyfrinachedd

configurable
configurable: adj. ffurfweddadwy

configuration
configuration: n. ffurfweddiad

configure
configure: cyflunio, configure: ffurfweddu

confined
confined: adj. cyfyng

confirmation
confirmation: n. cadarnhad, confirmation: n. cadarnhad

confirm
confirm: cadarnhau, confirm: conffirmio

conflict
conflict: n. anghysondeb

conform
conform: cydffurfio, conform: cydweddu, conform: cydymagweddu, conform: cydymffurfio

conformity
conformity: n. cydymffurfiad, conformity: n. cydymffurfiaeth

confuse
confuse: cawlio, confuse: drysu, confuse: pendifadu, confuse: pensyfrdanu

confusion
confusion: n. dryswch

congratulate
congratulate: llongyfarch

congratulation
congratulation: n. llongyfarchiad

congregate
congregate: ymgasglu

congruence
congruence: n. cyfathiant

congruent
congruent: adj. cyfath

conjecture
conjecture: dyfalu, conjecture: rhagddyfalu

conjugate
conjugate: n. cyfiau

conjugation
conjugation: n. rhediad

conjure
conjure: consurio

connected
connected: adj. cysylltiedig

connecting
connecting: adj. cysylltiol

connection
connection: n. cysylltiad

connectivity
connectivity: n. cysylltedd

conquer
conquer: concro, conquer: gorchfygu, conquer: maeddu

consanguinity
consanguinity: n. gwaedoliaeth

conscious
conscious: adj. ymwybodol

consciousness
consciousness: n. ymwybyddiaeth

consecrate
consecrate: bendigo, consecrate: cysegru

consecutive
consecutive: adj. olynol

consensus
consensus: n. consensws

consent
consent: n. cydsyniad

consequence
consequence: n. canlyniad

conservation
conservation: n. cadwraeth

conservatism
conservatism: n. ceidwadaeth

considerable
considerable: adj. cryn

consideration
consideration: n. ystyriaeth

consider
consider: cysidro, consider: pwyllo, consider: ystyried, consider: ystyrio

consistency
consistency: n. cysondeb

consonant
consonant: n. cytsain

consortium
consortium: n. consortiwm

conspire
conspire: bradfwriadu

constant
constant: n. cysonyn, constant: adj. cyson

constellation
constellation: n. cyfseriad

constipation
constipation: n. rhwymedd

constituency
constituency: n. etholaeth

constitutional
constitutional: adj. cyfansoddiadol

construction
construction: n. adeiladaeth

constructive
constructive: adj. adeiladol

construct timberwork
construct timberwork: coedio

consultant
consultant: n. ymgynghorydd

consultation
consultation: n. ymgynghoriad

consult
consult: ymgynghori

consult together
consult together: cydymgynghori

consumer
consumer: n. treuliwr

contain
contain: cynnwys

container
container: n. cynhwysydd

contaminate
contaminate: heintio

contemplate
contemplate: darsyllu, contemplate: myfyrio

contemplate deeply
contemplate deeply: dwysfyfyrio

contemporary
contemporary: n. cyfoed

contend
contend: ciprys, contend: haeru, contend: ymdaro, contend: ymdynnu, contend: ymgiprys, contend: ymryson

content
content: n. cynnwys, content: adj. bodlon

contest
contest: n. gornest

context
context: n. cyd-destun, context: n. cyd-destun

continuation
continuation: n. parhad

continue
continue: parhau

continuous
continuous: adj. di-dor

contour
contour: n. amlin

contract
contract: n. contract, contract: contractio, contract: cyfangu

contractor
contractor: n. contractiwr

contradict
contradict: croes-ddweud, contradict: gwrthddadleuo, contradict: gwrth-ddweud, contradict: gwrthddywedyd

contrast
contrast: n. cyferbyniad, contrast: cyferbynnu, contrast: cyferbynnu, contrast: gwrthgyferbynnu, contrast: gwrthgyferbynnu

contribute
contribute: cydroddi, contribute: cyfrannu

contribution
contribution: n. cyfraniad

contributor
contributor: n. cyfrannwr

controller
controller: n. rheolydd

controversial
controversial: adj. dadleuol

controversy
controversy: n. ymrafael

convenience
convenience: n. cyfleuster

convenient
convenient: adj. cyfleus, convenient: adj. hwylus, convenient: adj. hylaw

conventional
conventional: adj. confensiynol

convention
convention: n. confensiwn

converge
converge: cydgyfeirio

converse
converse: ymadrodd, converse: ymgomio

conversion
conversion: n. trawsnewid

convert
convert: trawsnewid, convert: trosi

converter
converter: n. trosydd

convex
convex: adj. amgrwm

convict
convict: collfarnu

convince
convince: argyhoeddi

convincing
convincing: adj. argyhoeddiadol

cook
cook: coginio

cookie
cookie: n. cwci

cool
cool: adj.sint. cwl

coolness
coolness: n. oerfelgarwch

co-operate
co-operate: cydweithredu

cooperation
cooperation: n. cydweithrediad

cooperative
cooperative: adj. cydweithredol

co-opt
co-opt: cyfetholi

coordinate
coordinate: n. cyfesuryn

coordinated
coordinated: adj. cydgysylltiedig

co-ordination
co-ordination: n. cydgordiad

coordinator
coordinator: n. cydlynydd

cope with
cope with: ymdopi

copse
copse: n. prysglwyn

copulate
copulate: cnuchio, copulate: cydorwedd, copulate: ymgydio

copy
copy: n. copi, copy: copïo

copyright
copyright: n. hawlfraint

copy-type
copy-type: copideipio

core
core: n. craidd, core: n. craidd

coriander
coriander: n. coriander

cork
cork: corcio

corn
corn: n. yd

corner
corner: n. congl, corner: n. cornel, corner: cornelu

cornerstone
cornerstone: n. conglfaen

cornice
cornice: n. cornis

corporate
corporate: adj. corfforaethol, corporate: adj. corfforedig

corporation
corporation: n. corfforaeth

correct
correct: adj. cywir, correct: cywiro

correction
correction: n. cywiriad

correlated
correlated: adj. cydberthynol

correlation
correlation: n. cydberthyniad, correlation: n. cydberthyniad

correspond
correspond: cydateb, correspond: gohebu, correspond: llythyra, correspond: llythyru

correspondence
correspondence: n. cyfatebiaeth, correspondence: n. gohebiaeth

correspondent
correspondent: n. gohebydd

corresponding
corresponding: adj. cyfatebol

correspond to
correspond to: cyfateb, correspond to: cyfatebu

corroboration
corroboration: n. ategiad

corrode
corrode: cyrydu

corrupt
corrupt: adj. llwgr, corrupt: llygrio, corrupt: llygru

corruption
corruption: n. llwgr

co-sign
co-sign: cydlofnoda

cosine
cosine: n. cosin

co-star
co-star: cydserennu

cost
cost: n. cost, cost: costio

cost-effective
cost-effective: adj. cost-effeithiol

cost-efficient
cost-efficient: adj. cost-effeithlon

cottage
cottage: n. bwthyn

cotyledon
cotyledon: n. had-deilen

cough
cough: peswch, cough: pesychu

council
council: n. cyngor

councillor
councillor: n. cynghorydd, councillor: n. cynghorwr

count
count: n. cyfrif, count: cowntio, count: cyfrif, count: cyfrifo, count: dyrifo, count: rhifo

counterbalance
counterbalance: gwrthbwyso

counterbalancing
counterbalancing: adj. gwrthbwysol

counter
counter: n. rhifydd, counter: n. cownter

countersink
countersink: gwrthsoddi

country
country: n. gwlad

county
county: n. sir, county: adj. sirol

couple
couple: n. cwpl, couple: cyplu, couple: cyplysu

coupon
coupon: n. cwpon

course
course: n. hynt, course: n. cwrs

court
court: n. llys, court: n. cwrt

covariance
covariance: n. cydamrywiad

covenant
covenant: cyfamodi

cover
cover: n. clawr, cover: cyfori, cover: cyfro, cover: gorchuddio, cover: huddo

covering
covering: n. gorchudd

covet
covet: cybyddu, covet: trachwantu

cowardice
cowardice: n. llwfrdra

cow
cow: n. buwch

cower
cower: cwrian

co-worship
co-worship: cydaddoli

crack
crack: cracio

crackle
crackle: clatsian

crash
crash: n. chwalfa

crave
crave: blysio, crave: blysu, crave: ysu

crawl
crawl: cripian, crawl: cropian, crawl: ymlusgo

creak
creak: rhincian, creak: rhincio

cream
cream: n. hufen, cream: hufennu

creams
creams: n. hufennau

create commotion
create commotion: dygyforio

create
create: creu

creation
creation: n. cread, creation: n. creadigaeth

creative
creative: adj. creadigol

creativity
creativity: n. creadigrwydd

creator
creator: n. crëydd

creature
creature: n. creadur

credibility
credibility: n. hygrededd

credit
credit: n. credyd, credit: credydu

creep
creep: cripio

cremate
cremate: amlosgi

crest
crest: n. brig

crew
crew: n. criw

crime
crime: n. trosedd

criminal
criminal: n. troseddwr, criminal: adj. troseddol

crimp
crimp: crimpio

crisis
crisis: n. taro, crisis: n. argyfwng

critical
critical: adj. argyfyngus, critical: adj. beirniadol, critical: adj. critigol

critic
critic: n. difrïwr

criticise
criticise: beirniadu

criticism
criticism: n. beirniadaeth

croak
croak: crawcio, croak: crewcian

crochet
crochet: crosio

croon
croon: crwnio

crooner
crooner: n. crwner

crop
crop: n. cnwd

crops
crops: n. cnydau

cross-border
cross-border: adj. trawsffiniol

cross
cross: n. croes, cross: croesi

cross-current
cross-current: n. croesgerrynt

cross-cut
cross-cut: trawslifio

cross oneself
cross oneself: ymgroesi, cross oneself: ymswyno

cross-question
cross-question: croesholi

cross-refer
cross-refer: croesgyfeirio, cross-refer: trawsgyfeirio

cross-section
cross-section: n. trawsdoriad

crouch
crouch: swatio

crowbar
crowbar: n. trosol

crowd
crowd: n. torf, crowd: ymdyrru

crown
crown: coroni

crucify
crucify: croeshoelio

crunch
crunch: crasgnoi, crunch: crensian, crunch: crensio

crush
crush: briwo

cry
cry: crio, cry: llefain

cryptography
cryptography: n. cryptograffeg

crystallise
crystallise: crisialu

cube
cube: n. ciwb

cubic
cubic: adj. ciwbig

cubit
cubit: n. cufydd

cuboid
cuboid: n. ciwboid

cudgel
cudgel: pastynu

cuff
cuff: cernodio

cultivate
cultivate: amaethu, cultivate: hwsmona

cultural
cultural: adj. diwylliannol

cultural festival
cultural festival: n. eisteddfod

culture
culture: n. diwylliant

cumulative
cumulative: adj. cronnus

cupboard
cupboard: n. cwpwrdd

cup
cup: n. cwpan, cup: n. cwpanaid, cup: cwpanu

cup of tea
cup of tea: n. paned

cure
cure: n. iachâd

currency
currency: n. arian breiniol

current
current: n. cerrynt, current: adj. cyfredol

curriculum
curriculum: n. cwricwlwm

curse
curse: diawlio, curse: melltithio

cursor
cursor: n. cyrchydd

curtsy
curtsy: moesymgrymu

curvature
curvature: n. camedd

curve
curve: n. cromlin

curved
curved: adj. crom, curved: adj. crwm

custody
custody: n. gwarchodaeth

custom
custom: n. arferiad, custom: adj. addasedig

customer
customer: n. cwsmer

customer-specific
customer-specific: adj. cwsmer-benodol

customisable
customisable: adj. addasadwy

cut
cut: n. toriad, cut: sgathru, cut: ysgathru

cut down
cut down: llori

cut into morsels
cut into morsels: tameidio

cut to bits
cut to bits: drabio

cyan
cyan: adj. gwyrddlas

cyberspace
cyberspace: n. rhithfro

cycle
cycle: n. cylchred, cycle: beicio, cycle: seiclo

cyclic
cyclic: adj. cylchol

cylinder
cylinder: n. silindr

cymricise
cymricise: cymreigio

cyrillic
Cyrillic: adj. Syrilig

dab
dab: dabio

daemon
daemon: n. ellyll

daily
daily: adj. beunyddiol, daily: adj. dyddiol

damage
damage: n. difrod, damage: n. niwed, damage: colledu

damn
damn: damnio

damning
damning: adj. damnïol

damp
damp: adj. llaith

dance
dance: n. dawns, dance: dawnsio

dancer
dancer: n. dawnswr

danger
danger: n. perygl

dangerous
dangerous: adj. enbyd, dangerous: adj. peryglus

dapple
dapple: britho

dare
dare: beiddio, dare: meiddio

dark
dark: adj.sint. tywyll

darken
darken: caddugo, darken: tywyllhau, darken: tywyllu

darkness
darkness: n. tywyllwch

dart about
dart about: gwybeta

dart
dart: gwibio, dart: picio

data
data: n. data

date
date: n. dyddiad, date: dyddio

dated
dated: adj. dyddiedig

daub
daub: dobio

daughter
daughter: n. merch

daunt
daunt: dantio, daunt: danto

dawdle
dawdle: dwdlio, dawdle: gwagsymera

dawn
dawn: gwawrio

day before yesterday
day before yesterday: n. echdoe

day
day: n. diwrnod, day: n. dydd

dead
dead: adj. marw, dead: adj. meirw

deadlock
deadlock: n. clo marw

deaf
deaf: adj.sint. byddar

deafen
deafen: byddaru

deafness
deafness: n. byddardod

deal
deal: n. dêl, deal: delio

deal in cattle
deal in cattle: porthmona

dealing
dealing: adj. deliadol

deanery
deanery: n. deoniaeth, deanery: n. deondy

dear
dear: adj. annwyl

death
death: n. marwolaeth, death: n. angau

debate
debate: n. dadl

debit
debit: n. debyd, debit: debydu

debone
debone: diesgyrnu

debt
debt: n. dyled

debtor
debtor: n. dyledwr

debug
debug: dadfygio

debugger
debugger: n. dadnamydd

decade
decade: n. degawd, decade: n. degaid

decagon
decagon: n. decagon

decagram
decagram: n. decagram

decalitre
decalitre: n. decalitr

decametre
decametre: n. decametr

decapitate
decapitate: torfynyglu

decay
decay: adfeilio, decay: braenu

deceased
deceased: adj. ymadawedig

deceitful
deceitful: adj. twyllodrus

deceive
deceive: ffalsio, deceive: twyllo

december
December: n. Rhagfyr

decentralised
decentralised: adj. datganoledig

decentralise
decentralise: datganoli

decentraliser
decentraliser: n. datganolwr

decide
decide: penderfynu

decide together
decide together: cydbenderfynu

decigram
decigram: n. decigram

decilitre
decilitre: n. decilitr

decimal
decimal: n. degol, decimal: n. degolyn, decimal: adj. degol, decimal: adj. degol

decimalise
decimalise: degoli

decimetre
decimetre: n. decimetr

decision
decision: n. penderfyniad

decision-maker
decision-maker: n. penderfynwr

declaration
declaration: n. datganiad

declarative
declarative: adj. datganiadol

declare
declare: datgan, declare: datganu

declensional
declensional: adj. rhediadol

declension
declension: n. rhediad

declinable
declinable: adj. rhedadwy

declined
declined: adj. ffurfdroëdig

decline
decline: dadfeilio

decoder
decoder: n. datgodydd

decommission
decommission: digomisiynu

decompose
decompose: dadelfennu

decontaminate
decontaminate: dadlygru

decorate
decorate: addurno

decoration
decoration: n. addurniad

decorative
decorative: adj. addurniadol

decrease
decrease: n. lleihad

decree
decree: deddfu

dedicated
dedicated: adj. ymroddgar

dedicatory
dedicatory: adj. cyflwyniadol

deduce
deduce: diddwytho

deep
deep: adj.sint. dofn, deep: adj.sint. dyfnion, deep: adj.sint. dwfn

deepen
deepen: dyfnhau

deface
deface: dinodi, deface: gwrthuno

defamation
defamation: n. difenwad

default
default: n. rhagosodiad, default: adj. rhagosodol, default: diofynnu

defecate
defecate: ysgothi

defective
defective: adj. diffygiol

defence
defence: n. amddiffyniad, defence: n. diffyniad

defendant
defendant: n. diffynnydd

defend
defend: amddiffyn

defensive
defensive: adj. amddiffynnol

deferral
deferral: n. gohiriad

deferred
deferred: adj. gohiriedig

defile
defile: llutrodi

defile oneself
defile oneself: ymhalogi

defined
defined: adj. diffiniedig

define
define: diffinio

definite
definite: adj. pendant

definition
definition: n. diffiniad

deform
deform: anffurfio

defraud
defraud: camgolledu

defy
defy: herfeiddio

degeneration
degeneration: n. dirywiad

degrade
degrade: diraddio

degree
degree: n. gradd

dehydrate
dehydrate: dad-ddyfrio, dehydrate: dihydradu

deify
deify: dwyfoli

dejection
dejection: n. digalondid

delay
delay: n. oediad

delayed
delayed: adj. oediedig

delegated
delegated: adj. dirprwyedig

delegation
delegation: n. cynrychiolaeth, delegation: n. dirprwyaeth

delete
delete: dileu

deliberate jointly
deliberate jointly: cydystyrio

deliberation
deliberation: n. arafeiddiwch

delicious
delicious: adj. pêr

delight
delight: n. hyfrydwch, delight: hyfrydu, delight: ymddigrifo

delightful
delightful: adj. hyfryd

delimited
delimited: adj. amffiniedig

delimiter
delimiter: n. amffinydd

delineate
delineate: dylunio, delineate: llinellu

deliverance
deliverance: n. gwaredigaeth, deliverance: n. achubiad

deliver
deliver: traddodi

delivery
delivery: n. delifriad

democracy
democracy: n. democratiaeth

democratic
democratic: adj. democrataidd

democratise
democratise: democrateiddio

demo
demo: n. arddangosiad, demo: adj. arddangosol

demographic
demographic: adj. demograffaidd, demographic: adj. demograffig

demultiplexer
demultiplexer: n. dadamlblecsydd

denominator
denominator: n. enwadur

denote
denote: darnodi, denote: dynodi

density
density: n. dwysedd

dental
dental: adj. deintyddol

dental surgery
dental surgery: n. deintyddfa

dent
dent: panylu, dent: pyllu, dent: tolcio

dentist
dentist: n. deintydd

dentistry
dentistry: n. deintyddiaeth

denude
denude: dinoethi

deny
deny: gwadu

deny oneself
deny oneself: hunanymwadu

deoxidise
deoxidise: dadocsideiddio

depart
depart: ymadael, depart: ymadu

departmental
departmental: adj. adrannol

depend
depend: dibynnu

dependency
dependency: n. dibyniaeth

dependent
dependent: adj. dibynnol

deplore
deplore: gresynu

depopulate
depopulate: diboblogi

deportation
deportation: n. alltudiaeth

deport
deport: caethgludo

depose
depose: diorsedd, depose: diorseddu

deposit
deposit: n. blaendaliad, deposit: n. blaendal, deposit: n. adnau, deposit: adneuo, deposit: dyddodi

depreciable
depreciable: adj. dibrisiadwy

depreciation
depreciation: n. dibrisiad

depression
depression: n. iselder

deprivation
deprivation: n. amddifadedd

deprive
deprive: amddifadu, deprive: difuddio

depth
depth: n. dyfnder

deputise
deputise: dirprwyo

deputy
deputy: n. dirprwy

deregularise
deregularise: dadreoleiddio

deride
deride: wfftian, deride: wfftio

derive from
derive from: deillio

descend
descend: disgyn

descending
descending: adj. disgynnol

descent
descent: n. goriwaered

describe
describe: disgrifio

describe oneself
describe oneself: ymddyfalu

description
description: n. disgrifiad

descriptive
descriptive: adj. disgrifiadol

deserve
deserve: haeddu, deserve: teilyngu

designated
designated: adj. dynodedig

designate
designate: adj. darpar

design beforehand
design beforehand: rhaglunio

design
design: n. dyluniad

designed
designed: adj. arfaethedig

designer
designer: n. dylunydd, designer: n. dyluniwr

desired
desired: adj. dymunol

desire
desire: n. awydd, desire: awyddu, desire: chwennych, desire: chwenychu

desktop
desktop: n. gweithfwrdd

desolation
desolation: n. anghyfanhedd-dra

despair
despair: anobeithio, despair: gwanobeithio

despise
despise: dibrisio, despise: dirmygu, despise: diystyried, despise: diystyru, despise: tremygu

despite
despite: pr. er

despoil
despoil: difrodi

destination
destination: n. cyrchfan

destine
destine: tyngedfennu

destiny
destiny: n. arfaeth

destroy
destroy: dinistrio, destroy: distrywio

destructive
destructive: adj. dinistriol

detachable
detachable: adj. datgysylltiol

detached
detached: adj. datgysylltiedig

detail
detail: n. manylder, detail: n. manylyn, detail: manylu

detailed
detailed: adj. manwl

deteriorate
deteriorate: dirywio, deteriorate: gwaelu, deteriorate: gwaethygu

deterioration
deterioration: n. dirywiad

determine
determine: pennu

deterrent
deterrent: adj. ataliol

detest
detest: ffieiddio

develop
develop: datblygu

developed
developed: adj. datblygedig

developer
developer: n. datblygwr

developing
developing: adj. datblygol

developmental
developmental: adj. datblygiadol

development
development: n. datblygiad

deviation
deviation: n. gwyriad

device
device: n. dyfais

devoted
devoted: adj. ymroddedig

devote oneself
devote oneself: ymgysegru, devote oneself: ymroddi, devote oneself: ymroi

devotion
devotion: n. ymroddiad

devour
devour: llarpio, devour: lleibio, devour: safnio

diabetes
diabetes: n. diabetes

diagnosis
diagnosis: n. diagnosis

diagnostic
diagnostic: n. diagnosteg, diagnostic: adj. diagnostig

diagonal
diagonal: n. croeslin, diagonal: adj. croeslinol, diagonal: adj. lletraws

diagram
diagram: n. diagram

dial
dial: deialo, dial: deialu

dialogue
dialogue: n. deialog, dialogue: n. ymgom

diameter
diameter: n. diamedr

diaries
diaries: n. dyddiaduron

diary
diary: n. dyddiadur

dictate
dictate: arddweud

dictionary
dictionary: n. geiriadur

die
die: n. dis, die: trigo

diet
diet: n. deiet, diet: n. diet

dietician
dietician: n. deietegydd

differ
differ: ymrafaelio

difference
difference: n. gwahaniaeth

different
different: adj. gwahanol

differentiate
differentiate: gwahaniaethu, differentiate: neilltuoli

difficult
difficult: adj. anodd

difficulty
difficulty: n. anhawster

diffuse
diffuse: tryledu

dig
dig: palu, dig: rhawio, dig: rhofio

digest
digest: treulio

digger
digger: n. cloddwr

digital
digital: adj. digidol

digit
digit: n. digid

dignified
dignified: adj. urddasol

dignity
dignity: n.unc. urddas

dilemma
dilemma: n. dilema

dilute
dilute: glastwreiddio, dilute: gwanedu

dim
dim: adj. pwl, dim: gwelwi

dimension
dimension: n. dimensiwn

diminish
diminish: lleihau, diminish: prinhau

dine
dine: ciniawa

dinner
dinner: n. cinio

dinosaur
dinosaur: n. deinosor

dioxide
dioxide: n. deuocsid

dip
dip: dipio, dip: dipo

diploma
diploma: n. diploma

direct
direct: adj. uniongyrchol, direct: cyfarwyddo, direct: cyfeirio, direct: sianelu

directional
directional: adj. cyfeiriol

direction
direction: n. cyfeiriad, direction: n. cyfer

directive
directive: n. cyfarwyddeb

director
director: n. cyfarwyddwr, director: n. cyfarwyddwraig

directory
directory: n. cyfeirlyfr, directory: n. cyfeiriadur

dirty
dirty: adj.sint. budr, dirty: adj.sint. budron, dirty: trochi

disability
disability: n. anabledd

disabled
disabled: adj. anabl, disabled: adj. analluog

disable
disable: analluogi

disadvantaged
disadvantaged: adj. difreintiedig

disadvantage
disadvantage: n. anfantais

disagreement
disagreement: n. anghytundeb

disambiguator
disambiguator: n. dadamwysydd

disappear
disappear: diflannu

disappoint
disappoint: siomi, disappoint: somi

disappointed
disappointed: adj. siomedig

disappointment
disappointment: n. siom

disapproval
disapproval: n. anghymeradwyaeth

disapprove
disapprove: anghymeradwyo

disarmament
disarmament: n. diarfogiad

disarm
disarm: diarfogi

disarrange
disarrange: anhrefnu

disassembler
disassembler: n. dadosodydd

disaster
disaster: n. trychineb

disastrous
disastrous: adj. trychinebus

disbelieve
disbelieve: anghoelio, disbelieve: anghredu

discipline
discipline: n. disgyblaeth, discipline: n. disgyblaeth, discipline: disgyblaethu, discipline: disgyblu, discipline: gwastrodaeth

disclose
disclose: datguddio

discomfit
discomfit: anghysuro

disconnect
disconnect: datgysylltu

disconnected
disconnected: adj. digyswllt

discontent
discontent: n. anfodlonrwydd

discord
discord: n. anghydfod

discount
discount: n. disgownt

discrete
discrete: adj. arwahanol

discretionary
discretionary: adj. dewisol

discretion
discretion: n. disgresiwn

discrimination
discrimination: n. anffafriaeth

discuss
discuss: trafod

discussion
discussion: n. trafodaeth

disease
disease: n. clefyd

disendow
disendow: dadwaddoli

disenfranchise
disenfranchise: difreinio

disentangle
disentangle: mysgu

disestablish
disestablish: ansefydlu, disestablish: dadsefydlu

disfigure
disfigure: hagráu, disfigure: hagru

disgrace
disgrace: gwarthruddo, disgrace: meflu

dishonesty
dishonesty: n. anonestrwydd

dishonour
dishonour: amharchu, dishonour: dianrhydeddu

disillusionment
disillusionment: n. dadrithiad

disincorporate
disincorporate: datgorffori

disinfectant
disinfectant: n. diheintydd

disinfect
disinfect: diheintio

disk
disk: n. disg

disk-drive
disk-drive: n. disgyrrwr

disk drive
disk drive: n. gyriant

dislocate
dislocate: datgymalu

dismember
dismember: diaelodi

dismissal
dismissal: n. diswyddiad

dismiss
dismiss: diswyddo

disobedience
disobedience: n. anufudd-dod

disobey
disobey: anufuddhau

disorder
disorder: n. anhrefn

disparage
disparage: dilorni

dispatch
dispatch: danfon

dispersal
dispersal: n. gwasgariad

displace
displace: dadleoli, displace: dadosod

display
display: n. arddangosiad, display: n. dangosiad, display: n. arddangosydd, display: n. dangosydd, display: arddangos

displayed
displayed: adj. arddangosedig

displease
displease: anfoddio

dispossess
dispossess: difeddiannu

disprove
disprove: gwrthbrofi

dispute
dispute: ymddadlau

disqualification
disqualification: n. anghymhwyster

disqualify
disqualify: anaddasu, disqualify: anghyfaddasu, disqualify: anghymhwyso

disrepute
disrepute: n. anfri

disrespectful
disrespectful: adj. amharchus

dissatisfaction
dissatisfaction: n. anfodlonrwydd

dissatisfy
dissatisfy: anfodloni

dissect
dissect: datrannu, dissect: dyrannu

disseminate
disseminate: lledaenu, disseminate: ymdaenu

dissent
dissent: anghydsynio

dissimilar
dissimilar: adj. annhebyg

dissipation
dissipation: n. oferedd

dissolve
dissolve: ymddatod

distance
distance: n. pellter

distil
distil: dihidlo, distil: distyllio, distil: distyllu, distil: stilio

distillation
distillation: n. distylliad

distinct
distinct: adj. gwahaniaethol

distinction
distinction: n. gwahaniad

distinctive
distinctive: adj. nodedig

distinguish
distinguish: hynodi, distinguish: neilltuo

distinguishing feature
distinguishing feature: n. gwahanodiad

distort
distort: aflunio, distort: lledwyro, distort: ystumio

distortion
distortion: n. aflunedd, distortion: n. afluniad

distribute
distribute: dosbarthu

distribution
distribution: n. dosraniad

distributions
distributions: n. dosbarthiad

distributor
distributor: n. dosbarthwr

district
district: n. rhanbarth

distrust
distrust: anymddiried, distrust: drwgdybio

disturb
disturb: aflonyddu, disturb: menu, disturb: tarfu

ditch
ditch: n. ffos

dive
dive: deifio, dive: plymio

diverge
diverge: dargyfeirio

divest
divest: diosg, divest: diosgi

divide
divide: cydrannu

divide equally
divide equally: cyhydeddu

divide into thirds
divide into thirds: traeanu

divisible
divisible: adj. rhanadwy

division
division: n. rhaniad

divorce
divorce: n. ysgariad, divorce: ysgaru

do a rough job
do a rough job: brasio

dockapp
dockapp: n. docydd

dock
dock: n. doc

docker
docker: n. docydd

doctor
doctor: n. meddyg, doctor: doctora, doctor: doctoran

documentation
documentation: n. dogfennaeth

document
document: n. dogfen

dodecagon
dodecagon: n. dodecagon

do
do: ailwneud, do: gwneud

dog
dog: n. ci

dogmatic
dogmatic: adj. ymhongar

dollar
dollar: n. doler

domain
domain: n. parth

domestic
domestic: adj. domestig

dominate
dominate: dominyddu, dominate: tra-awdurdodi

domineer
domineer: tra-arglwyddiaethu

domino
domino: n. domino

door
door: n. drws

do pushups
do pushups: gwrthwasgu

dose
dose: n. dos, dose: drensio

dot
dot: n. dot

dote
dote: dotio, dote: ffoli, dote: gwirioni

double
double: n. dwbl, double: adj. dwbl, double: dyblo, double: dyblu

doubt
doubt: amau

doubtless
doubtless: adj. diau

download
download: n. lawrlwythiad

doze
doze: dwmpian, doze: pendwmpio

dozen
dozen: n. dwsin

draft
draft: n. drafft, draft: drafftio

drag
drag: dragio, drag: llusgo

draggable
draggable: adj. llusgadwy

drain
drain: n. draen, drain: dihysbyddu, drain: disbyddu, drain: draenio, drain: traenio

drama
drama: n. drama

dramatic
dramatic: adj. dramatig

dramatise
dramatise: dramateiddio

dramatist
dramatist: n. dramodwr

draw close
draw close: closio

draw
draw: tynnu

drawing
drawing: n. lluniad, drawing: n. lluniad

dread
dread: arswydo, dread: echrydio, dread: echrydu

dream
dream: n. breuddwyd, dream: breuddwydio

dress
dress: n. gwisg, dress: gwisgo, dress: ymddilladu, dress: ymwisgo

dribble
dribble: diferynnu, dribble: driblo

drift
drift: drifftio, drift: hiffio, drift: lluwchio

drill
drill: drilio

drink
drink: n. diod, drink: yfed

drip
drip: defni, drip: diferu, drip: dripian

drive
drive: gyrru

drivel
drivel: dreflu, drivel: driflo

driver
driver: n. gyrrwr, driver: n. gyrrydd

drizzle
drizzle: brewlan, drizzle: briwlan

droll
droll: adj. smala

drone
drone: grwnan

drop-down list
drop-down list: n. cwymplen

drop
drop: n. diferyn

drown
drown: boddi

drug
drug: n. cyffur

drugs
drugs: n. cyffuriau

drum
drum: tabyrddio, drum: tabyrddu

drunkenness
drunkenness: n. meddwdod

dry
dry: adj.sint. sych, dry: adj.sint. sychlyd, dry: hesbio, dry: sychu

dual
dual: adj. deuol

dub
dub: dwbio

duct
duct: tiwbio

dumb
dumb: adj.sint. mud

dummy
dummy: ffugbasio

dump
dump: dympio

duplex
duplex: adj. dwplecs

duplicate
duplicate: adj. dyblyg, duplicate: dyblygu

during
during: pr. yn ystod

dust
dust: n. llwch

duty
duty: n. dyletswydd

dwell
dwell: hendrefu, dwell: tabernaclu, dwell: trigfannu, dwell: trigiannu, dwell: trigo

dwelling
dwelling: n. preswyl, dwelling: n. annedd

dye
dye: llifo

dynamic
dynamic: adj. dynamig

dynamics
dynamics: n. dynameg

dysentery
dysentery: n. gwaedlif

each
each: adj. pob

eager
eager: adj. awyddus

ear
ear: n. clust

earlier
earlier: adj. cynt

early
early: adj. cynnar

earmark
earmark: clustnodi

earning
earning: n. ennill

earth
earth: n. daear

earth up
earth up: priddio

ease
ease: lliniaru

easier
easier: adj. haws

easing
easing: adj. esmwyth

e-assessment
e-assessment: n. e-asesu

east
east: n. dwyrain

eastern
eastern: adj. dwyreiniol

easy
easy: adj.sint. hawdd, easy: adj.sint. rhwydd

eat
eat: bwyta

eat supper
eat supper: swpera, eat supper: swperu

ebb
ebb: treio

ecclesiastical
ecclesiastical: adj. eglwysig

echo
echo: n. adlais, echo: n. atsain

ecological
ecological: adj. ecolegol

ecology
ecology: n. ecoleg

e-commerce
e-commerce: n. e-fasnach

economic
economic: adj. economaidd

economics
economics: n. economeg

economy
economy: n. economi

edge
edge: n. ymyl

edited
edited: adj. golygedig

edit
edit: golygu

edition
edition: n. argraffiad

edit jointly
edit jointly: cydolygu

editor
editor: n. golygydd

editorial
editorial: adj. golygyddol

educate
educate: addysgu

educational
educational: adj. addysgol

education
education: n. addysg

educator
educator: n. addysgwr

eel
eel: n. llysywen

effect
effect: n. effaith, effect: effeithio

effective
effective: adj. effeithiol

effervesce
effervesce: eferwi

effervescence
effervescence: n. eferwad

efficiency
efficiency: n. effeithlonrwydd

efficient
efficient: adj. effeithlon

effort
effort: n. ymdrech

e.g.
e.g.: abbr. e.e.

egg
egg: n. wy

eighteenth
eighteenth: adj. deunawfed

eight
eight: adj. wyth

eighth
eighth: adj. wythfed

eisteddfod
eisteddfod: adj. eisteddfodol

either
either: adj. naill

e-learning
e-learning: n. e-ddysgu

elected
elected: adj. etholedig

elect
elect: ethol, elect: etholi

election
election: n. etholiad

electoral
electoral: adj. etholiadol

electrical
electrical: adj. trydanol

electricity
electricity: n. trydan

electrify
electrify: gwefreiddio, electrify: trydanu

electronic
electronic: adj. electronig

electronvolt
electronvolt: n. electronfolt

elementary
elementary: adj. elfennol

element
element: n. elfen

elephant
elephant: n. eliffant

e-letter
e-letter: n. e-lythyr

elevated
elevated: adj. dyrchafedig

elitist
elitist: adj. elitaidd

ellipse
ellipse: n. elips, ellipse: n. hirgylch

elocution
elocution: n. areithyddiaeth

email
email: n. ebost, email: ebostio

emanate
emanate: tarddellu

emancipate
emancipate: rhyddfreinio

emancipation
emancipation: n. rhyddhad

embargo
embargo: n. embargo

embedded
embedded: adj. planedig

embellish
embellish: tecáu

embody
embody: corffoli, embody: corffori, embody: ymgorffori

emboss
emboss: boglynnu

embrace
embrace: breicheidio, embrace: mynwesu

embroider
embroider: brodio

emerald
emerald: n. emrallt

emergency
emergency: n. argyfwng, emergency: n. taro, emergency: n. argyfwng

emeritus
emeritus: adj. emeritws

emigrate
emigrate: allfudo, emigrate: ymfudo

eminent
eminent: adj. goruchel

emission
emission: n. allyriad

emit
emit: allyrru

emotional
emotional: adj. emosiynol

emotion
emotion: n. emosiwn

emperor
emperor: n. ymherodr, emperor: n. ymerawdwr

emphasise
emphasise: pwysleisio

emphasis
emphasis: n. pwyslais

empire
empire: n. ymerodraeth

empiricism
empiricism: n. empeiraeth

employed
employed: adj. cyflogedig

employee
employee: n. cyflogai

employ
employ: cyflogi

employer
employer: n. cyflogwr

employment
employment: n. cyflogaeth

empower
empower: galluogi

empress
empress: n. ymerodres

emptiness
emptiness: n. gwacter

empty
empty: adj. gwag, empty: gwacáu, empty: gwagio, empty: gwagu

emulate
emulate: dynwared

emulation
emulation: n. efelychiad

emulator
emulator: n. efelychydd

emulsify
emulsify: emwlseiddio

enabled
enabled: adj. galluog

enable
enable: galluogi

enamel
enamel: enamlio

encapsulated
encapsulated: adj. amgaeëdig

encapsulation
encapsulation: n. amgaead

enchant
enchant: swyno

enclosed
enclosed: adj. amgaeedig, enclosed: adj. amgaeëdig

enclose
enclose: amgáu

encoded
encoded: adj. amgodiedig

encode
encode: amgodio

encoder
encoder: n. amgodydd

encoding
encoding: n. amgodiad

encourage
encourage: calonogi

encourage oneself
encourage oneself: ymannog

encouraging
encouraging: adj. cefnogol

encroach upon
encroach upon: llechfeddiannu

encrust
encrust: crestennu

encrypted
encrypted: adj. amgryptiedig

encrypt
encrypt: amgryptio

encyclopaedia
encyclopaedia: n. gwyddoniadur

endanger
endanger: peryglu

end
end: n. diwedd

endless
endless: adj. diddiwedd

endnote
endnote: n. diweddnodiad

endow
endow: cynysgaeddu, endow: donio, endow: gwaddoli

endure
endure: hirbarhau

enemy
enemy: n. gelyn

energetic
energetic: adj. egnïol

energise
energise: egnioli

energy
energy: n. egni, energy: n. ynni

enfeeble
enfeeble: llesgáu, enfeeble: llesgu

engine
engine: n. injan

engineer
engineer: n. peiriannwr

engineering
engineering: n. peirianneg

english
English: adj. Saesneg

enhancement
enhancement: n. gwelliant

enjoy
enjoy: mwynhau

enjoyment
enjoyment: n. mwynhad

enlarge
enlarge: chwyddo, enlarge: helaethu, enlarge: mawrhau, enlarge: mwyhau

enlargement
enlargement: n. helaethiad

enlarge upon
enlarge upon: ymhelaethu

enlighten
enlighten: diwyllio, enlighten: goleuo

enlist
enlist: ymrestru

enlistment
enlistment: n. ymrestriad

enliven
enliven: bywiocáu, enliven: sioncio, enliven: ymfywiocáu

enormous
enormous: adj. enfawr

enough
enough: n. digon

enrage
enrage: cynddeiriogi

enrich
enrich: cyfoethogi

enrich oneself
enrich oneself: ymgyfoethogi

enrobe
enrobe: arwisgo

enrol
enrol: aelodi

ensnare
ensnare: carfaglu, ensnare: rhwydo

ensuing
ensuing: adj. canlynol

ensure
ensure: sicrhau, ensure: siwrhau

enterprise
enterprise: n. menter

enterprising
enterprising: adj. mentrus

entertainment
entertainment: n. adloniant

enthrone
enthrone: gorseddu

enthusiastic
enthusiastic: adj. brwdfrydig

entity
entity: n. endid

entomb
entomb: daearu

entreat
entreat: erfyn, entreat: erfynio

entrepreneurial
entrepreneurial: adj. mentergarol

entropi
entropi: n. entropi

entrusted
entrusted: adj. ymddiriedig

entwine
entwine: cyfrodeddu

entwining
entwining: n. cordeddiad

enunciate
enunciate: geirio

envelope
envelope: n. amlen

envelop
envelop: enhuddo, envelop: goblygu

envious
envious: adj. cenfigennus

environmental
environmental: adj. amgylcheddol

environment
environment: n. amgylchedd, environment: n. amgylchfyd

environs
environs: n. amgylch

envy
envy: cenfigennu, envy: eiddigeddu

epidemiological
epidemiological: adj. epidemiolegol

epoch
epoch: n. epoc

e-publishing
e-publishing: n. e-gyhoeddi

equal
equal: adj. cyfartal, equal: adj. hafal

equal in rank
equal in rank: adj. cydradd

equalise
equalise: cydraddol, equalise: cyfartalu

equality
equality: n. cydraddoldeb

equals sign
equals sign: n. hafalnod

equanimity
equanimity: n. tawelwch

equate
equate: hafalu

equation
equation: n. hafaliad

equator
equator: n. cyhydedd

equilateral
equilateral: adj. hafalochrog

equipment
equipment: n. cyfarpar

equivalent
equivalent: n. cywerthydd, equivalent: adj. cyfwerth, equivalent: adj. cywerth

e-recruitment
e-recruitment: n. e-recriwtio

ergonomics
ergonomics: n. ergonomeg

erode
erode: erydu

err
err: amryfuso, err: ffaelu

error
error: n. gwall, error: n. gwallau

erupt
erupt: echdorri

escape
escape: dianc, escape: dihangu, escape: dihengyd, escape: ymachub

escort
escort: hebrwng

especially
especially: adj. enwedig

espionage
espionage: n. ysbïaeth

essay
essay: n. traethawd

essence
essence: n. hanfod, essence: n. naws

essential
essential: adj. hanfodol

essentials
essentials: n. hanfodion

established
established: adj. sefydledig

establish
establish: sefydlu

establish jointly
establish jointly: cydsefydlu

establishment
establishment: n. sefydliad

estate
estate: n. stad, estate: n. ystad

estimated
estimated: adj. amcangyfrifol

estimate
estimate: n. amcangyfrif, estimate: amcangyfrif

estimate wrongly
estimate wrongly: camfesur

estrange
estrange: dieithrio, estrange: estroneiddio

estuary
estuary: n. aber

etch
etch: ysgythru

eternal
eternal: adj. tragwyddol

ether
ether: n. ether

ethical
ethical: adj. moesegol

ethnic
ethnic: adj. ethnig

ethnology
ethnology: n. ethnyddiaeth

ethos
ethos: n. ethos

e-training
e-training: n. e-hyfforddi

european
European: adj. Ewropeaidd

eutrophise
eutrophise: ewtroffeiddio

evaluate
evaluate: enrhifo

evaluation
evaluation: n. enrhifiad, evaluation: n. gwerthusiad

evangelise
evangelise: efengylu

evaporate
evaporate: anweddu, evaporate: ymageru

even
even: adj. cyson

evening
evening: n. noswaith

even number
even number: n. eilrif, even number: n. eilrif

event
event: n. digwyddiad

everything
everything: n. popeth

eviction
eviction: n. troad allan

exact
exact: adj. union

exaggerated
exaggerated: adj. gormodieithol

exaggerate
exaggerate: gorliwio

exaggeration
exaggeration: n. gormodiaith

exalt
exalt: tradyrchafu

exalt oneself
exalt oneself: ymddyrchafu

examination
examination: n. arholiad

examine
examine: arholi, examine: profi

example
example: n. esiampl, example: n. enghraifft

exceed
exceed: rhagori

excellence
excellence: n. rhagoriaeth

excellent
excellent: adj. ardderchog, excellent: adj. camplawn, excellent: adj. rhagorol

excepted
excepted: adj. eithriedig

except
except: pr. eithr, except: eithriadu, except: eithrio, except: ymeithrio

exceptional
exceptional: adj. eithriadol

exception
exception: n. eithriad, exception: n. hepgoriad

exchange
exchange: n. cyfnewidfa, exchange: cyfnewid, exchange: trwco

excite
excite: cyffroi

excitement
excitement: n. cyffro

exciting
exciting: adj. cyffrous, exciting: adj. cynhyrfus

exclusive
exclusive: adj. anghynhwysol, exclusive: adj. ecsgliwsif

exclusivity
exclusivity: n. anghynwysoldeb

excommunicate
excommunicate: esgymuno, excommunicate: ysgymuno

excrete
excrete: ysgarthu

excuse
excuse: n. esgus, excuse: diheuro, excuse: esgusodi

excuse oneself
excuse oneself: ymesgusodi

executable
executable: n. gweithredai, executable: adj. gweithredadwy

execute
execute: dienyddio, execute: dienyddu

executive
executive: n. gweithrediaeth, executive: n. gweithredwr, executive: n. gweithredwraig

exemplify
exemplify: enghreifftio

exemption
exemption: n. esemptiad

exercise
exercise: n. ymarferiad, exercise: n. ymarfer

exhale
exhale: allanadlu

exhaust
exhaust: hysbyddu

exhibition
exhibition: n. arddangosfa

exhortation
exhortation: n. anogaeth, exhortation: n. anogiaeth

exile
exile: alltudio

existence
existence: n. bodolaeth

exist
exist: bodoli

exit
exit: n. allanfa, exit: allanu

expanded
expanded: adj. ehangedig

expand
expand: ehangu

expected
expected: adj. disgwyliedig

expect
expect: disgwyl

expendable thing
expendable thing: n. hepgor

expenditure
expenditure: n. gwariant

expensive
expensive: adj. drudfawr, expensive: adj. drud

experienced
experienced: adj. profiadol

experience
experience: n. profiad

experimental
experimental: adj. arbrofol

experiment
experiment: n. arbrofiad, experiment: n. arbrawf, experiment: arbrofi

expertise
expertise: n. arbenigedd

expired
expired: adj. darfodedig

explain
explain: egluro, explain: esblygu, explain: esbonio

explanation
explanation: n. esboniad

explanatory
explanatory: adj. esboniadol

explicit
explicit: adj. diamwys

explode
explode: ffrwydro

exploit
exploit: n. ymelwad, exploit: ecsbloetio

explosion
explosion: n. ffrwydrad, explosion: n. tanchwa

exponent
exponent: n. esbonydd, exponent: n. lladmerydd

exponential
exponential: adj. esbonyddol

exported
exported: adj. allforedig

export
export: n. allforiad, export: allforio

express
express: mynegi

expression
expression: n. mynegiad, expression: n. ymadrodd, expression: n. mynegiant

extended
extended: adj. estynedig

extend
extend: ymestyn

extensible
extensible: adj. estynadwy

extension
extension: n. estyniad, extension: n. ymestyniad

extensive
extensive: adj. eang

extent
extent: n. helaethrwydd

external
external: adj. allanol

extinguish
extinguish: diffodd

extort
extort: cribddeilio

extract
extract: echdynnu

extractor
extractor: n. echdynnydd

extracurricular
extracurricular: adj. allgyrsiol

extradite
extradite: estraddodi, extradite: trosroddi

extreme
extreme: adj. eitha, extreme: adj. eithaf

extremist
extremist: adj. eithafol

eye
eye: n. llygad, eye: llygadu

eyelid
eyelid: n. amrant

fabricate
fabricate: ffabrigo

face
face: n. gwyneb, face: n. wyneb, face: wynebu

face value
face value: n. wynebwerth

facilitate
facilitate: hwyluso, facilitate: hyrwyddo, facilitate: rhwyddhau

fact
fact: n. ffaith

faction
faction: n. carfan, faction: n. carfan

factor
factor: n. ffactor, factor: ffactorio

factorial
factorial: n. ffactorial

factory
factory: n. ffatri

factual
factual: adj. ffeithiol

faded
faded: adj. pyledig

fade
fade: edwino, fade: pylu

fading
fading: adj. pwl

failed
failed: adj. methedig

fail
fail: aflwyddo, fail: diffygio, fail: methu

failure
failure: n. methiant

faint
faint: llewygu

fair
fair: n. ffair, fair: adj.sint. teg

fairly
fairly: adj. gweddol, fairly: adj. lled

faith
faith: n. ffydd

faithful
faithful: adj. ffyddlon

fall again
fall again: ailgwympo

fall
fall: cwympo, fall: syrthio

fallow
fallow: braenaru

fall silent
fall silent: ymdawelu

false
false: adj.sint. ffug

falsify
falsify: anwireddu, falsify: ffugio

falsity
falsity: n. geudeb

familial
familial: adj. teuluol

familiar
familiar: adj. adnabyddus, familiar: adj. cyfarwydd

familiarise oneself
familiarise oneself: ymgyfarwyddu

familiarity
familiarity: n. cynefindra

family
family: n. teulu

famous
famous: adj. enwog

fancy
fancy: n. ffansi, fancy: ffansïo

fantasy
fantasy: n. ffantasi

farewell
farewell: ffarwelio

far
far: adj.sint. pell

farmer
farmer: n. ffermwr

farm
farm: n. fferm, farm: ffarmio, farm: ffermio

far-reaching
far-reaching: adj. pellgyrhaeddol

fart
fart: rhechu

fascinate
fascinate: llygad-dynnu

fashion
fashion: n. ffasiwn, fashion: saernïo

fasten
fasten: ffasno

fasten with a latch
fasten with a latch: cliciedu

fast
fast: adj. cyflym, fast: ymprydio

fatal
fatal: adj. angheuol, fatal: adj. marwol

fateful
fateful: adj. tyngedfennol

fat
fat: n. braster, fat: adj.sint. bras, fat: adj.sint. tew

father
father: n. tad

fatherhood
fatherhood: n. tadolaeth

fathom
fathom: n. gwryd

fatten
fatten: brasáu, fatten: pesgi, fatten: tewhau, fatten: tewychu, fatten: ymbesgi

fault
fault: n. bai

faulty
faulty: adj. gwallus

favicon
favicon: n. hoffeicon

favourable
favourable: adj. ffafriol

favour
favour: ffafrio

favourite
favourite: n. ffefryn, favourite: adj. hoff

fax
fax: n. ffacs

fear
fear: n. ofn, fear: ofni

feast
feast: n. gwledd

feathered
feathered: adj. pluog

feather
feather: pluennu

feature
feature: n. nodwedd

february
February: n. Chwefror

federated
federated: adj. cyfunol

federate
federate: ffedereiddio

feed a horse
feed a horse: ebrannu

feedback
feedback: n. adborth

feed
feed: n. porthiant, feed: bwydo, feed: porthi

feed on
feed on: ymborthi

fee
fee: n. ffi

feel
feel: teimlo, feel: ymdeimlo

feeling
feeling: n. teimlad

feel remorse
feel remorse: atgnoi

feet
feet: n. traed

fell
fell: cymynu

fellow pupil
fellow pupil: n. cyd-ddisgybl

fellow student
fellow student: n. cyn-fyfyriwr

female
female: adj. benyw

feminine
feminine: adj. benywaidd

femto
femto: adj. ffemto

fence
fence: n. ffens, fence: ffensio, fence: ymgleddyfu

fender
fender: n. bancr

fermentation
fermentation: n. eplesiad

ferment
ferment: bregysu, ferment: eplesu

ferret
ferret: ffuredu, ferret: ffureta

fertilise
fertilise: ffrwythloni

fertility
fertility: n. ffrwythlondeb

fester
fester: cancru, fester: crawnio, fester: madru

festival
festival: n. gwyl

fetter
fetter: hualu, fetter: llyffetheirio

feudalise
feudalise: ffiwdalhau

feudalism
feudalism: n. ffiwdaliaeth

fflirt
fflirt: fflyrtio

fibre
fibre: n. ffeibr

fiction
fiction: n. ffuglen

fiddle
fiddle: ffidlan, fiddle: ffidlo

field
field: n. cae, field: n. maes, field: maesu

fierce
fierce: adj. ffyrnig

fifteen
fifteen: adj. pymtheg

fifteenth
fifteenth: adj. pymthegfed

fifth
fifth: adj. pumed

fight
fight: brwydro, fight: cwffio, fight: ymladd

figure
figure: n. ffigur, figure: n. ffigwr

file
file: n. ffeil, file: ffeilio

fillet-weld
fillet-weld: lleinasio

fill
fill: llanw, fill: llenwi

fill up
fill up: ymlenwi

film
film: n. ffilm, film: ffilmio

filter
filter: n. hidlen, filter: trylifo

final
final: adj. terfynol

finance
finance: n. cyllid, finance: ariannu, finance: cyllido

finance jointly
finance jointly: cydgyllido

financial
financial: adj. cyllidol

finder
finder: n. canfyddydd

find
find: ffeindio

fine
fine: n. dirwy, fine: adj.sint. braf, fine: adj.sint. mân, fine: dirwyo

finger
finger: n. bys, finger: byseddu, finger: bysio, finger: bysu

finished
finished: adj. gorffenedig

finish
finish: n. gorffeniad

finite
finite: adj. meidraidd

finland
Finland: n. Ffindir

fire
fire: n. tân, fire: tanio

fire-weld
fire-weld: tanasio

firing
firing: n. taniad

firm
firm: n. ffyrm, firm: adj. cadarn

firmness
firmness: n. sadrwydd

firmware
firmware: n. cadarnwedd

first
first: adj. cynta, first: adj. cyntaf, first: adj. prif, first: adj. unfed

fishery
fishery: n. pysgodfa

fish
fish: n. pysgodyn, fish: pysgota

fish for salmon
fish for salmon: eoca

fit
fit: adj.sint. cymwys, fit: adj.sint. ffit, fit: adj.sint. heini, fit: ffitio

fitness
fitness: n. ffitrwydd

fit with a shaft
fit with a shaft: garanu

five
five: adj. pum, five: adj. pump

five-year
five-year: adj. pum-mlynedd

fixed
fixed: adj. gosodol, fixed: adj. sefydlog

fix
fix: n. trwsiad

flag
flag: n. baner, flag: llumanu

flag up
flag up: baneru

flare
flare: fflamio, flare: tanbeidio

flash
flash: n. fflach, flash: fflachio, flash: lluchedu

flash lightning
flash lightning: melltennu, flash lightning: melltio

flask
flask: n. fflasg

flat
flat: n. fflat, flat: adj.sint. gwastad

flatten
flatten: fflatio

flatter
flatter: gwenieithio, flatter: gwenieithu, flatter: truthio

flavour
flavour: n. blas, flavour: blasuso

fleck
fleck: brychu

flee
flee: ffoi, flee: heglu

fleeting
fleeting: adj. diflanedig

flesh
flesh: n. cnawd

flex
flex: ystwytho

flexibility
flexibility: n. hyblygrwydd

flexible
flexible: adj. hyblyg

flight
flight: n. ffo

flit about
flit about: darymred

float
float: arnofio

flood
flood: n. llif

floodlight
floodlight: llifoleuo

floor
floor: n. llawr, floor: llorio

floppy
floppy: adj. llipa

flour
flour: n. blawd

flourish
flourish: prifio

flower
flower: n. blodyn, flower: blodeuo

flow
flow: n. llif, flow: dylifo, flow: llifo

flow into
flow into: aberu

flow together
flow together: cydlifio

fluctuate
fluctuate: anwadalu

fluent
fluent: adj. rhugl

flutter
flutter: cyhwfan

fly
fly: ehedeg, fly: ehedfan, fly: hedfan, fly: hedo

fly into a rage
fly into a rage: myllio

fly into a temper
fly into a temper: gwylltio

foam
foam: brochi, foam: ewynnu

focus
focus: n. canolbwynt, focus: n. ffocws

focussed
focussed: adj. ffocysedig

folder
folder: n. plygell

fold
fold: plygu

folk
folk: n. gwerin

followed
followed: adj. dilynedig

follow
follow: canlyn, follow: dilyn, follow: olynu

following
following: adj. canlynol, following: adj. dilynol

follow on the heel
follow on the heel: sodli

fondle
fondle: anwesu, fondle: anwylo, fondle: mwytho, fondle: swmpo, fondle: tolach

font
font: n. ffont

foobar
foobar: n. ffwbar

food
food: n. bwyd

football
football: n. pêl-droed

foot
foot: n. troedfedd, foot: n. troed

footnote
footnote: n. troednodiad

forbid
forbid: gwahardd

forecast
forecast: rhagolygu

foreground
foreground: n. blaendir

foreigner
foreigner: n. estron

foreign
foreign: adj. dieithr, foreign: adj. tramor

foreknowledge
foreknowledge: n. blaenwybodaeth

foresee
foresee: rhagweld

forest
forest: n. coedwig, forest: coedwigo

forestry
forestry: n. coedwigaeth

foretell
foretell: rhagfynegi

forewarn
forewarn: rhagrybuddio

forewarning
forewarning: n. rhagrybudd

foreword
foreword: n. rhagair

forfeit
forfeit: fforffedu

for
for: pr. am, for: pr. ar gyfer

forget
forget: anghofio, forget: ebargofi

forgive
forgive: maddau

forked
forked: adj. hollt

fork
fork: fforchio

formal
formal: adj. ffurfiol

formality
formality: n. ffurfioldeb

format
format: n. fformat, format: fformatio

formation
formation: n. ffurfiad

formative
formative: adj. ffurfiannol

former minister
former Minister: n. cyn-Weinidog

former president
former president: n. cyn-lywydd

form
form: n. diwyg, form: n. ffurf, form: n. ffurflen, form: ffurfio, form: llunio

formic
formic: adj. fformig

form into regiments
form into regiments: catrodi

form letters
form letters: llythrennu

formula
formula: n. fformiwla

formulate
formulate: fformiwleiddio

fornicate
fornicate: godinebu

for the purpose of
for the purpose of: pr. gogyfer â

for the sake of
for the sake of: pr. er mwyn, for the sake of: pr. er mwyn

forthnight
forthnight: n. pythefnos

fortieth
fortieth: adj. deugeinfed

fortify
fortify: castellu

fortnightly
fortnightly: adj. pythefnosol

fortress
fortress: n. amddiffynfa

fortunate
fortunate: adj. ffodus

fortune
fortune: n. ffortiwn

forty
forty: adj. deugain

forum
forum: n. fforwm

fossilise
fossilise: ffosileiddio

foul throw
foul throw: camdaflu

foundation
foundation: n. seilwaith, foundation: n. sylfaen

four
four: adj. pedair, four: adj. pedwar

fourth
fourth: adj. pedwaredd, fourth: adj. pedwerydd

fractional
fractional: adj. ffracsiynol

fraction
fraction: n. ffracsiwn

fragmented
fragmented: adj. tameidiog

fragment
fragment: n. darn

frame
frame: n. ffrâm, frame: fframio

framework
framework: n. fframwaith

france
France: n. Ffrainc

franchise
franchise: n. masnachfraint

fraud
fraud: n. twyll

freedom
freedom: n. rhyddid

free
free: adj.sint. rhydd

freeze
freeze: fferru, freeze: llwydrewi, freeze: rhewi

freezing point
freezing point: n. rhewbwynt

freight
freight: n. llwyth llong

frequency
frequency: n. amledd, frequency: n. amlder

frequent
frequent: adj. mynych, frequent: adj. aml, frequent: cyniwair, frequent: cyniweirio, frequent: mynychu

fresh
fresh: adj.sint. croyw, fresh: adj.sint. ffres, fresh: adj.sint. ir

friday
Friday: n. Dydd Gwener

friend
friend: n. ffrind

friendliness
friendliness: n. cyfeillgarwch

friendly
friendly: adj.sint. cyfeillgar

frighten
frighten: dychryn, frighten: dychrynu

fright
fright: n. dychryn

fringe
fringe: n. cwr

frisk
frisk: clero, frisk: dychlamu, frisk: llamsachu

from
from: pr. o

front
front: n. blaen

front view
front view: n. blaenolwg

frown
frown: gwgu

fruit
fruit: n. ffrwyth

frustrated
frustrated: adj. rhwystredig

frustration
frustration: n. rhwystredigaeth

fry
fry: ffrio

fuel
fuel: n. tanwydd

full
full: adj.sint. llawn

fullness
fullness: n. llond

full-time
full-time: adj. amser-llawn

functional
functional: adj. swyddogaethol

functionality
functionality: n. swyddogaeth

function
function: n. swyddogaeth, function: n. ffwythiant

fundamental
fundamental: adj. sylfaenol

fund
fund: n. cronfa

funding
funding: n. cyllid

funds
funds: n. cronfeydd

funeral
funeral: n. angladd

fun
fun: n. hwyl

funky
funky: adj. ffynci

furnish
furnish: dodrefnu

furnish with an axle
furnish with an axle: gwerthyd

fuse
fuse: ffiwsio

fuss
fuss: ffwdanu

future
future: n. dyfodol

fuzzy
fuzzy: adj.sint. niwlaidd

gadget
gadget: n. teclyn

gain
gain: n. buddiant

galaxy
galaxy: n. galaeth

gallery
gallery: n. oriel

gallivant
gallivant: cymowta, gallivant: hoetian

gallon
gallon: n. galwyn

gallop
gallop: carlamu

galvanise
galvanise: galfaneiddio

gamble
gamble: gamblo, gamble: hapchwarae

game
game: n. chwarae, game: n. gêm

game of chance
game of chance: n. hapchwarae

gamma
gamma: adj. gama

gape
gape: rhythu, gape: safnrhythu

gap
gap: n. bwlch

gapless
gapless: adj. difwlch

garden
garden: n. gardd, garden: garddio

gardening
gardening: n. garddio

garment
garment: n. dilledyn

gas
gas: n. nwy

gash
gash: cyllellu

gasify
gasify: nwyeiddio

gasoline
gasoline: n. petrol

gasp
gasp: ebychu

gatekeeper
gatekeeper: n. porthor

gateway
gateway: n. porth

gather bilberries
gather bilberries: llusa

gather fuel
gather fuel: cynuta

gather
gather: cynnull

gather nuts
gather nuts: cneua, gather nuts: cneuo

gather reeds
gather reeds: cawna

gather rushes
gather rushes: pabwyra

gather together
gather together: cydgasglu, gather together: cydgrynhoi, gather together: cydgynnull

gather wool
gather wool: gwlana

gauge
gauge: meidryddu

gay
gay: adj. hoyw

gear
gear: n. gêr

genealogy
genealogy: n. achyddiaeth

general
general: adj. cyffredinol

generalisation
generalisation: n. cyffredinoliad

generalise
generalise: cyffredinoli

generate
generate: generadu

generation
generation: n. cenhedlaeth

generic
generic: adj. generig

genetic
genetic: adj. genetig

genetics
genetics: n. geneteg

gentlemanly
gentlemanly: adj. bonheddig

geographical
geographical: adj. daearyddol

geography
geography: n. daearyddiaeth

geology
geology: n. daeareg

geometrig
geometrig: adj. geometrig

geometry
geometry: n. geometreg

german
German: adj. Almaeneg

germinate
germinate: egino

gesticulate
gesticulate: munudio

gesture
gesture: n. ystum

get a new lease of life
get a new lease of life: dadluddedu

get angry
get angry: digio

get buried
get buried: ymgladdu

get drunk
get drunk: meddwi

get frosty
get frosty: barugo

get
get: cael

get late
get late: hwyrhau

get married
get married: ymbriodi

get rid of
get rid of: lloesi

get wiser
get wiser: callio

get wounded
get wounded: ymglwyfo

gifted
gifted: adj. dawnus

gift
gift: n. rhodd

gild
gild: euro, gild: goreuro

ginger
ginger: n. sinsir

girdle
girdle: gwregysu

girl
girl: n. geneth

give a drink to
give a drink to: diodi

give birth
give birth: esgor

give freely
give freely: rhadroddi

give
give: rhoddi, give: rhoi

give refuge
give refuge: swcro

gladden
gladden: llonni, gladden: sirioli

gladness
gladness: n. llawenydd

glamorgan
Glamorgan: n. Morgannwg

glance
glance: n. cipolwg, glance: cildremio

glass
glass: n. gwydr

glaze
glaze: gwydro

gleam
gleam: llathru

glide
glide: gleidio

glorification
glorification: n. gogoneddiad

glorify
glorify: gogoneddu, glorify: mawrygu

glory
glory: n. gogoniant

glossy
glossy: adj. sgleiniog

glow red-hot
glow red-hot: eiriasu

glue
glue: gludio

glut
glut: glythu

gluttony
gluttony: n. glythineb

gnat
gnat: n. gwybedyn

goal
goal: n. cyrchnod

goat
goat: n. gafr

go awry
go awry: gwyrgamu

gobble
gobble: bochio, gobble: llawcio, gobble: llowcio

god
god: n. duw

go
go: mynd

gold
gold: n. aur

golf
golf: n. golff

go mad
go mad: amhwyllo, go mad: gwallgofi, go mad: ynfydu

good
good: adj.sint. da

goodness
goodness: n. daioni

go offside
go offside: camochri

go on a pilgrimage
go on a pilgrimage: pererindota, go on a pilgrimage: pererinio

go on strike
go on strike: streicio

gore
gore: cornio, gore: twlcio

gorge
gorge: gwancu

goruchwyliwr
goruchwyliwr: n. adfywiad

gospel
gospel: n. efengyl

gouge
gouge: cynio

govern
govern: arglwyddiaethu, govern: llywodraethu

governing
governing: adj. llywodraethol

government
government: n. llywodraeth

governor
governor: n. llywodraethwr

grade
grade: dichlynu, grade: graddoli

gradient
gradient: n. graddiant

gradual
gradual: adj. graddol

graduate
graduate: graddio, graduate: graddnodi

graft
graft: impio

grain of sand
grain of sand: tywodyn

gram
gram: n. gram

grammar
grammar: n. gramadeg

grandfather
grandfather: n. taid

grandmother
grandmother: n. nain

grant
grant: n. grant

grants
grants: n. grantiau

granulate
granulate: graeanu

graph
graph: n. graff

graphical
graphical: adj. graffigol

graphic
graphic: n. graffigyn, graphic: adj. graffig

graphics
graphics: n. graffeg

grapple
grapple: ymaflyd

grasp
grasp: craffu, grasp: crapio, grasp: gafael, grasp: ymaelyd, grasp: ymafael

grass
grass: n. gwellt

grate
grate: rhygnu

gratify
gratify: boddloni, gratify: rhyngu

gratitude
gratitude: n. diolchgarwch

grave
grave: n. bedd

graveyard
graveyard: n. mynwent

gravitate
gravitate: disgyrchu

gravity
gravity: n. disgyrchiant

graze
graze: pori

grease
grease: blonegu, grease: gweru, grease: seimio

great
great: adj.sint. mawrion

greatness
greatness: n. mawredd

green
green: adj.sint. gwerdd, green: adj.sint. gwyrdd

greeter
greeter: n. cyfarchydd

greet
greet: cyfarch, greet: ymannerch

greeting
greeting: n. cyfarchiad, greeting: n. cyfarch, greeting: n. annerch

grey
grey: adj.sint. llwyd

greynetic
greynetic: adj. llwydnetig

greyscale
greyscale: adj. graddlwyd

grid
grid: n. grid

grieve
grieve: brwyno, grieve: dolurio

grind
grind: llifanu, grind: llifianu, grind: malu

grip
grip: n. gafael, grip: cydio

groan
groan: griddfan, groan: griddfanu, groan: gruddfanu

groom
groom: gwastrodi

groove
groove: rhigoli

grope
grope: palfalu, grope: ymbalfalu

gross
gross: adj.sint. gros

ground
ground: n. llawr

group
group: n. grwp, group: grwpio

groupware
groupware: n. cylchwedd

grovel
grovel: ymgreinio

grow cold
grow cold: oeri

grow fierce
grow fierce: dywalhau, grow fierce: dywalu

grow
grow: tyfu

grow heavy
grow heavy: trymhau

growl
growl: arthio

grow scaly
grow scaly: cennu

growth
growth: n. twf, growth: n. tyfiant

grow tired
grow tired: ymlâdd

grow togther
grow togther: cyd-dyfu

grudge
grudge: n. dig

grumble
grumble: ceintach, grumble: conach, grumble: grwgnach, grumble: swnan, grumble: swnian, grumble: tuchanu

grunt
grunt: rhochian, grunt: rhochio, grunt: rhwchio

guarantee
guarantee: gwarantu

guarantor
guarantor: n. arwaesaf

guard
guard: n. giard

guess
guess: gesio

guest
guest: n. gwahoddedig, guest: n. gwestai

guffaw
guffaw: crechwenu

guidance
guidance: n. arweiniad, guidance: n. cyfarwyddiaeth

guide
guide: n. arweiniad, guide: n. cyfeirydd, guide: llwybreiddio

guideline
guideline: n. canllaw

guilty
guilty: adj.sint. euog

gulp
gulp: cegu

gurgle
gurgle: bwrlymu

gush
gush: hifflo

guzzle
guzzle: traflyncu

gymnastics
gymnastics: n. gymnasteg

habitat
habitat: n. cynefin

habit
habit: n. arfer

habitual
habitual: adj. arferadwy

hack
hack: ceibio, hack: hacio

hackle flax
hackle flax: heislanu

hackle
hackle: n. gwrychyn

haemorrhage
haemorrhage: n. gwaedlif

hail
hail: cyfarchu

hair
hair: n. blewyn, hair: n. gwallt, hair: n. gwelltyn

half
half: n. hanner

half-kill
half-kill: darnladd

half-open
half-open: cilagor

hall
hall: n. neuadd

halter
halter: cebystru

halve
halve: haneru

hammer
hammer: morthwylio

handbook
handbook: n. llawlyfr

hand
hand: n. dyrnfedd, hand: n. llaw

hand-held
hand-held: n. llawiadur

handicraft
handicraft: n. crefft

handle
handle: n. carn

hands-free
hands-free: adj. diddwylo

hang-glide
hang-glide: barcuta

hang
hang: crogi, hang: hongian

hanging
hanging: adj. crog

hang oneself
hang oneself: ymgrogi

happen
happen: digwydd

happy
happy: adj.sint. hapus

harass
harass: cythryblu

harbour
harbour: n. porth, harbour: n. porthladd, harbour: n. harbwr

harden
harden: caledu

hard
hard: adj.sint. caled

hardship
hardship: n. caledi

hardware
hardware: n. caledwedd

hard-working
hard-working: adj. gweithgar

harmful
harmful: adj. andwyol, harmful: adj. niweidiol

harm
harm: niweidio

harmonic
harmonic: adj. harmonig

harmonise
harmonise: cydseinio

harmony
harmony: n. cytgord

harness
harness: harneisio

harrow
harrow: llyfnu, harrow: ogedu

harsh
harsh: adj.sint. chwyrn

harvest
harvest: cynaeafu

hash
hash: n. stwns

haste
haste: n. brys

hasten
hasten: ffullio

hatch
hatch: deor, hatch: deori

hate
hate: casáu

haul
haul: cywain, haul: halian, haul: halio

have diarrhoea
have diarrhoea: pibo

hay
hay: n. gwair

header
header: n. pennyn

heading
heading: n. pennawd

headmaster
headmaster: n. prifathro

head of cattle
head of cattle: n. gwarthegyn

headword
headword: n. dangosair

heal
heal: iacháu

health
health: n. iechyd

healthy
healthy: adj.sint. iach

heap
heap: n. pentwr, heap: n. twr, heap: tyrru

heap together
heap together: cruglwytho

hear
hear: clywed

hearing
hearing: n. gwrandawiad

hearten
hearten: gwroli

heart
heart: n. calon

hearth
hearth: n. aelwyd

heater
heater: n. gwresydd

heat
heat: gwresogi, heat: twymo, heat: ymdwyro

heathenism
heathenism: n. paganiaeth

heathland
heathland: n. rhostir

heave
heave: hifio

heaven
heaven: n. nef

heavy
heavy: adj.sint. trwm

heckle
heckle: heclo

hectare
hectare: n. hectar, hectare: n. hecterw

hectogram
hectogram: n. hectogram

hecto
hecto: adj. hecto

hectolitre
hectolitre: n. hectolitr

hectometre
hectometre: n. hectometr

hedge
hedge: n. gwrych, hedge: n. clawdd

heed
heed: hidio

height
height: n. uchder, height: n. taldra

helper
helper: adj. cynorthwyol

helpful
helpful: adj. cynorthwyol

help
help: n. cymorth, help: helpio, help: helpu

hem
hem: gwalteisio, hem: gwaltysu, hem: hemio

hemp
hemp: n. cywarch

hen
hen: n. iâr

henna
henna: n. henna

heptagon
heptagon: n. heptagon

herald
herald: n. herald

herd
herd: diadellu

hereditary
hereditary: adj. etifeddol

here
here: adv. yma, here: adv. wedyn

heritage
heritage: n. etifeddiaeth, heritage: n. treftadaeth

hernia
hernia: n. bors

hero
hero: n. arwr

hesitate
hesitate: petruso

heterogeneity
heterogeneity: n. amrywedd

hexadecimal
hexadecimal: adj. hecsadegol

hexagon
hexagon: n. hecsagon

hexagram
hexagram: n. hecsagram

hex
hex: adj. hecs

hexomino
hexomino: n. hecsomino

hextile
hextile: n. hecsdeilsen

hibernate
hibernate: gaeafgysgu

hibernation
hibernation: n. gaeafgwsg

hiccup
hiccup: igian

hidden
hidden: adj. cêl, hidden: adj. cudd, hidden: adj. cuddiedig

hide
hide: cuddio, hide: cwato, hide: llechu

hierarchical
hierarchical: adj. hierarchaidd

hierarchy
hierarchy: n. hierarchaeth

high
high: adj.sint. uchel

highland
highland: n. ucheldir

highlighted
highlighted: adj. amlygedig

highlighting
highlighting: n. amlygiad

highway
highway: n. priffordd

hike
hike: heicio

hill
hill: n. bryn

hillock
hillock: n. twyn

hinder
hinder: hindro, hinder: llesteirio, hinder: lluddio, hinder: nadu, hinder: rhwystro

hinge
hinge: colfachu

hint
hint: n. awgrym

hire
hire: hurio, hire: llogi

hire-purchase
hire-purchase: n. hurbwrcas

his
his: det.pos. ei

hiss
hiss: hisian

historian
historian: n. hanesydd, historian: n. haneswr

historical
historical: adj. hanesyddol

history
history: n. hanes

hi-tech
hi-tech: adj. uwchdechnoleg

hit
hit: pwno

hobble along
hobble along: clunhercio

hobble
hobble: clunhecio, hobble: hercio, hobble: hobelu

hoe
hoe: batingo, hoe: hofio

hold an inquiry
hold an inquiry: cwestio

hold free of blame
hold free of blame: difeio

hold
hold: dal

holding
holding: n. daliad

hole
hole: n. twll

holiday
holiday: n. gwyl

hollow
hollow: cafnio, hollow: cafnu

holy
holy: adj.sint. sanctaidd

homage
homage: n. gwrogaeth

home
home: n. cartref

home page
home page: n. hafan

homosexuality
homosexuality: n. cyfunrhywoliaeth

honeydew
honeydew: n. melwlith

honour
honour: n. anrhydedd, honour: anrhydeddu, honour: breinio, honour: breintio, honour: urddo

hood
hood: cycyllu

hook
hook: bachu

hoot
hoot: hwtian, hoot: hwtio

hope
hope: n. gobaith, hope: gobeithio

horizon
horizon: n. gorwel

horizontal
horizontal: n. llorwedd, horizontal: adj. llorweddol

horn
horn: n. corn

horrible
horrible: adj. erchyll

horse
horse: n. ceffyl

horsemanship
horsemanship: n. marchogaeth

horsepower
horsepower: n. marchnerth

horticulture
horticulture: n. garddwriaeth

hospital
hospital: n. ysbyty

hostel
hostel: n. hostel

host
host: n. lliaws, host: n. gwesteiwr, host: n. llu

hostility
hostility: n. gelyniaeth

hotel
hotel: n. gwesty

hot
hot: adj.sint. brwd, hot: adj.sint. poeth

hourglass
hourglass: n. awrwydr

hour
hour: n. awr

hourly
hourly: adj. awrol

householder
householder: n. preswylwr

house
house: n. ty

hovercraft
hovercraft: n. hofrenfad

hover
hover: hofran

howl
howl: nadu

huge
huge: adj. anferth

hug
hug: cofleidio

human
human: adj. dynol

humanism
humanism: n. hiwmaniaeth

human-right
human-right: n. hawl-dynol

humble
humble: adj.sint. gostyngedig

hum
hum: hymian

humour
humour: n. hiwmor

hundred
hundred: n. cant

hundredth
hundredth: adj. canfed

hundredweight
hundredweight: n. canpwys

hunt
hunt: hela

hurry
hurry: brysio, hurry: prysuro

hurt
hurt: brifo

husband
husband: n. gwr

hydrogen
hydrogen: n. hidrogen

hydrolyse
hydrolyse: hidroleiddio

hydrostatics
hydrostatics: n. hidrostateg

hygiene
hygiene: n. hylendid

hygienist
hygienist: n. hylenydd

hymn
hymn: n. emyn

hyperbole
hyperbole: n. gormodiaith

hyperbolic
hyperbolic: adj. hyperbolig

hypergeometric
hypergeometric: adj. hypergeometrig

hyperlink
hyperlink: n. hypergyswllt

hypermarket
hypermarket: n. archfarchnad

hypermedia
hypermedia: n. archgyfrwng

hyphenator
hyphenator: n. cysylltnodydd

hyphen
hyphen: n. cysylltnod

hypnotise
hypnotise: hypnoteiddio

hypochondria
hypochondria: n. pruddglwyf

hypothesis
hypothesis: n. rhagdybiaeth

hyssop
hyssop: n. isop

ice
ice: n. rhew, ice: n. iâ

ichthyology
ichthyology: n. pysgyddiaeth

icon
icon: n. eicon

iconig
iconig: adj. eiconig

icosahedron
icosahedron: n. icosahedron

idea
idea: n. syniad

ideal
ideal: n. delfryd, ideal: adj. delfrydol, ideal: adj. dymunadwy

idealise
idealise: delfrydu

ideality
ideality: n. delfrydiaeth

identifiable
identifiable: adj. adnabyddadwy

identify with
identify with: uniaethu

ideological
ideological: adj. ideolegol

id
ID: n. dynodiad

idiom
idiom: n. priod-ddull

idle
idle: adj. segur, idle: diogi, idle: pencawna, idle: segura, idle: seguro

ignorance
ignorance: n. anwybodaeth

ignore
ignore: anwybyddu

illegal
illegal: adj. anghyfreithlon

ill
ill: adj.sint. sâl

illness
illness: n. afiechyd, illness: n. clefyd, illness: n. salwch

ill-treat
ill-treat: camdrin

illuminate
illuminate: llewychu, illuminate: llewyrchu

illustrate
illustrate: darlunio

illustrative
illustrative: adj. enghreifftiol

illustrator
illustrator: n. darluniwr

image
image: n. delwedd

imaginary
imaginary: adj. dychmygol

imagination
imagination: n. dychymyg

imagine
imagine: dychmygu, imagine: dychymyg

imbalance
imbalance: n. anghydbwysedd

imbecile
imbecile: n. penwan

imbibe
imbibe: diota, imbibe: mewnlyncu

immerse
immerse: trochi

immigrant
immigrant: n. mewnfudwr

immigrate
immigrate: mewnfudo

immigration
immigration: n. mewnfudiad

immortalise
immortalise: anfarwoli

immortality
immortality: n. anfarwoldeb

immunise
immunise: imwneiddio

impact
impact: n. ardrawiad, impact: n. trawiad, impact: n. effaith

impairment
impairment: n. amhariad

impartial
impartial: adj. amhleidiol

impartiality
impartiality: n. amhleidiaeth

impede
impede: cloffrwymu

imperial
imperial: adj. imperial, imperial: adj. ymerodrol

impetus
impetus: n. impetws

implementation
implementation: n. gweithredoliant

implication
implication: n. goblygiad

implicit
implicit: adj. ymhlyg

implore
implore: crefu, implore: eiriol, implore: eirioli, implore: ymbil, implore: ymbilio

imply
imply: cyfleu

importance
importance: n. pwysigrwydd

important
important: adj. pwysig

import
import: n. mewnforiad, import: mewnforio

impossible
impossible: adj. amhosib, impossible: adj. amhosibl

impound
impound: ffaldio

impoverish
impoverish: tlodi

impregnate
impregnate: cyfloi

impression
impression: n. argraff

imprison
imprison: caethiwo, imprison: carcharu

imprisonment
imprisonment: n. carchariad

improper
improper: adj. amhriodol

improve
improve: gwella, improve: gwellhau, improve: gwelliannu

improvement
improvement: n. gwelliant

inability
inability: n. anallu

in accordance with
in accordance with: pr. yn unol â

inactive
inactive: adj. anweithredol

inadequacy
inadequacy: n. annigonolrwydd

inappropriate
inappropriate: adj. anaddas

in-car
in-car: adj. yn-y-car

incarnate
incarnate: cnawdoli

incense
incense: n. arogldarth

incentive
incentive: n. cymhelliad

incest
incest: n. llosgach

inch
inch: n. modfedd

incidental
incidental: adj. digwyddiadol

incite
incite: annos

incline
incline: gogwyddo

include
include: n. cynhwysiad

inclusion
inclusion: n. cynhwysiad

inclusive
inclusive: adj. cynhwysol

income
income: n. incwm, income: n. incwm

incoming tide
incoming tide: n. llanw

incompatibility
incompatibility: n. anghydnawsedd

incompatible
incompatible: adj. anghydnaws, incompatible: adj. anghytûn

incomplete
incomplete: adj. anghyflawn

inconsistency
inconsistency: n. anghysonedd

inconsistent
inconsistent: adj. anghydwedd, inconsistent: adj. anghyson

inconvenience
inconvenience: n. anghyfleuster, inconvenience: anhwyluso

inconvenient
inconvenient: adj. anghyfleus

incorrect
incorrect: adj. anghywir

increase
increase: n. codiad, increase: n. cynnydd, increase: amlhau, increase: cynyddu

increasing
increasing: adj. cynyddol

incredible
incredible: adj. anhygoel

indebted
indebted: adj. dyledus

indemnification
indemnification: n. indemniad

indemnity
indemnity: n. indemniad

indent
indent: n. mewnoliad

independence
independence: n. annibyniaeth

independent
independent: n. annibynnwr, independent: adj. annibynnol

index
index: n. mynegai, index: mynegeio, index: mynegrifo

indicator
indicator: n. dangosydd

indict
indict: ditio

indigenous
indigenous: adj. brodorol

indirect
indirect: adj. anuniongyrchol

indispensable
indispensable: adj. anhepgor, indispensable: adj. anhepgorol

individual
individual: n. unigolyn, individual: adj. unigol

individualism
individualism: n. unigolyddiaeth

individualistic
individualistic: adj. unigolyddol

individualist
individualist: adj. unigolydd

indoctrinate
indoctrinate: athrawiaethu

indo-european
Indo-European: n. Indo-Ewropeg

induce
induce: anwytho

inducement
inducement: n. cymell

indulgence
indulgence: n. anwes

industrial
industrial: adj. diwydiannol

industry
industry: n. diwydiant

ineffectiveness
ineffectiveness: n. aneffeithiolrwydd

inefficiency
inefficiency: n. aneffeithlonrwydd

inefficient
inefficient: adj. aneffeithlon

inequality
inequality: n. anghydraddoldeb

inevitable
inevitable: adj. anochel

inexperienced
inexperienced: adj. dibrofiad

infection
infection: n. haint

infectious
infectious: adj. heintus

inferiority
inferiority: n. israddoldeb

infinite
infinite: adj. anfeidrol

infinity
infinity: n. anfeidredd

infix
infix: mewnddodi

inflate
inflate: enchwythu

inflation
inflation: n. chwyddiant

inflected
inflected: adj. ffurfdroëdig

inflectional
inflectional: adj. ffurfdroadol

influence
influence: n. dylanwad, influence: dylanwadu

informal
informal: adj. anffurfiol

inform on
inform on: chwidlo

infrared
infrared: adj. isgoch

infrastructure
infrastructure: n. isadeiledd

infrequent
infrequent: adj. anaml

in front of
in front of: pr. o flaen

infuriate
infuriate: ffyrnigo

ingenious
ingenious: adj. dyfeisgar

ingenuity
ingenuity: n. dyfeisgarwch

ingratitude
ingratitude: n. anniolchgarwch

inhabitant
inhabitant: n. trigolyn

inhabit
inhabit: cartrefu, inhabit: cyfanheddu

inherent
inherent: adj. cynhwynol

inherited
inherited: adj. etifeddol, inherited: adj. etifeddol

inherit
inherit: etifeddio, inherit: etifeddu

in
in: pr. yn

initial
initial: adj. cychwynnol, initial: adj. dechreuol

initial letter
initial letter: n. blaenlythyren

initiative
initiative: n. blaengaredd

in its entirety
in its entirety: adj. penbaladr

inject
inject: mewnsaethu

injure
injure: anafu

injustice
injustice: n. anghyfiawnder

ink
ink: n. inc

inline
inline: adj. mewnlein

innate
innate: adj. cynhenid

innovation
innovation: n. arloesedd

innovative
innovative: adj. arloesol

innumerable
innumerable: adj. di-ri

input
input: n. mewnbwn, input: mewnbynnu

inquire
inquire: ymholi

inquiry
inquiry: n. ymholiad

insanity
insanity: n. gorffwylledd

insert
insert: mewnosod

insertion
insertion: n. mewnosodiad

inside
inside: pr. o fewn

insignificant
insignificant: adj. anarwyddocaol

insinuate
insinuate: ensynio

insist
insist: mynnu, insist: taeru

inspecting
inspecting: adj. arolygol

inspect
inspect: archwilio

inspection
inspection: n. arolygiad

inspectorate
inspectorate: n. arolygiaeth

inspector
inspector: n. arolygydd, inspector: n. arolygwr

inspiration
inspiration: n. ysbrydoliaeth

inspire
inspire: ysbrydoli

in spite of
in spite of: pr. er gwaethaf

instability
instability: n. ansadrwydd

installation
installation: n. arsefydliad

installer
installer: n. arsefydlydd

instance
instance: n. enghraifft

instead of
instead of: pr. yn lle

institute
institute: cyseilio

institute of education
institute of education: athrofa

institutional
institutional: adj. sefydliadol

institution
institution: n. sefydliad

instruct
instruct: gwyddori

instructive
instructive: adj. addysgiadol

instrument
instrument: n. offeryn

insubordination
insubordination: n. anufudd-dod

insufficiency
insufficiency: n. annigonedd

insufficient
insufficient: adj. annigonol

insulate
insulate: inswleiddio

insult
insult: n. sarhad, insult: sarhau

insuperable
insuperable: adj. anorfod

insurance
insurance: n. yswiriant

insure
insure: yswirio

insurer
insurer: n. yswiriwr

integer
integer: n. cyfanrif

integral
integral: adj. annatod, integral: adj. integrol

integrated
integrated: adj. cyfannol, integrated: adj. integredig

integrate
integrate: cyfannu

integration
integration: n. integreiddiad

integrity
integrity: n. cywirdeb

intellectual
intellectual: adj. deallusol

intelligent
intelligent: adj. deallus

intend
intend: arfaethu, intend: brydio, intend: bwriadu, intend: pwrpasu

intense
intense: adj. dwys

intensify
intensify: dwysáu

intensity
intensity: n. angerdd

intentional
intentional: adj. bwriadol

intention
intention: n. bwriad

interaction
interaction: n. rhyngweithiad

interactive
interactive: adj. rhyngweithiol

intercede
intercede: ymeiriol

interesting
interesting: adj. diddorol

interest
interest: n. diddordeb, interest: n. llog, interest: diddori

interface
interface: n. rhyngwyneb, interface: rhyngwynebu

interfere
interfere: ymyrru, interfere: ymyrryd

interference
interference: n. ymyrraeth

inter
inter: priddo

interlace
interlace: cydweu

intermediate
intermediate: adj. canolradd, intermediate: adj. canolraddol, intermediate: adj. rhyngol

intermittent
intermittent: adj. ysbeidiol

internal
internal: adj. mewnol

internalise
internalise: mewnoli

international
international: adj. rhyngwladol

internet
internet: n. rhyngrwyd

interplay
interplay: n. cyd-chwarae

interpretation
interpretation: n. dehongliad

interpreter
interpreter: n. dehonglydd, interpreter: n. dehonglwr

interpret
interpret: dehongli

interprocess
interprocess: adj. rhyngbrosesol

inter-professional
inter-professional: adj. rhyng-broffesiynol

interrelationship
interrelationship: n. cydberthynas

interrupt
interrupt: n. ymyriad

interruption
interruption: n. ymyrraeth

intersect
intersect: croestorri

intersection
intersection: n. croesdoriad

interval
interval: n. cyfamser, interval: n. cyfwng

intervene
intervene: cyfryngu

intervention
intervention: n. ymyriad

interview
interview: n. cyfweliad, interview: cyfweld

in the middle of
in the middle of: pr. ynghanol

in the presence of
in the presence of: pr. gerbron, in the presence of: pr. yng ngwydd

intone
intone: pyncio

intoxication
intoxication: n. meddwdod

intractable
intractable: adj. anorchfygol

intranet
intranet: n. mewnrwyd

introduce
introduce: cyflwyno, introduce: rhagarwain

introduction
introduction: n. arweiniad, introduction: n. rhagdraeth

introductory
introductory: adj. arweiniol, introductory: adj. rhagarweiniol

introspection
introspection: n. mewnsylliad

invalid
invalid: adj. annilys

invasion
invasion: n. goresgyniad

invent
invent: dyfeisio

inverse
inverse: n. gwrthdro

inverted
inverted: adj. gwrthdro

investigate
investigate: ymchwilio

investigation
investigation: n. ymchwiliad

invest
invest: buddsoddi

investment
investment: n. buddsoddiad

invisible
invisible: adj. anweledig

invitation
invitation: n. gwahoddiad

invited
invited: adj. gwahoddedig

invite
invite: gwahodd

invoiced
invoiced: adj. anfonebedig

invoice
invoice: anfonebu

iodine
iodine: n. ïodin

ion
ion: n. ïon

ireland
Ireland: n. Iwerddon

irish
Irish: n. Gwyddeleg

ironic
ironic: adj. eironig

iron
iron: n. haearn, iron: smwddio, iron: ysmwddio

irradiate
irradiate: arbelydru

irradiation
irradiation: n. arbelydriad

irrational
irrational: adj. afresymol

irregular
irregular: adj. afreolaidd

irregularity
irregularity: n. afreoleidd-dra

island
island: n. ynys

isochronous
isochronous: adj. unamserol

isolate
isolate: arunigo, isolate: ynysu

isolation
isolation: n. arwahanrwydd

isometric
isometric: adj. isomedrig

isosceles
isosceles: adj. isosgeles

italig
italig: adj. italig

itch
itch: cosi, itch: merwino

itemise
itemise: eitemeiddio

item
item: n. eitem

iteration
iteration: n. iteriad

iterative
iterative: adj. iterus

itinerant
itinerant: adj. teithiol

ivory
ivory: n. ifori

jabber
jabber: bragaldio

jack
jack: jacio

jam
jam: jamio

january
January: n. Ionawr

japanese
Japanese: n. Siapaneg, Japanese: adj. Siapanaidd

japan
Japan: n. Siapan

jargon
jargon: n. jargon

jar
jar: n. jar, jar: cnecio, jar: cnecu

jewess
Jewess: n. Iddewes

jewish
Jewish: adj. Iddewig

jew
Jew: n. Iddew

jigsaw
jigsaw: n. jigso

job
job: n. swydd

jog
jog: loncian

join
join: asio, join: ymuno

joint appointment
joint appointment: n. gyd-benodiad

joint committee
joint committee: n. cydbwyllgor

joint federation
joint federation: n. cydffederasiwn

joint
joint: n. cymal, joint: adj. cyd

joint venture
joint venture: adj. cydfentro

joke
joke: jocan, joke: jocian, joke: smalio

journalism
journalism: n. newyddiaduriaeth

journalist
journalist: n. newyddiadurwr

journal
journal: n. dyddlyfr

journey
journey: n. taith, journey: n. siwrnai

judaism
Judaism: n. Iddewiaeth

judge competent
judge competent: cyneddfu

judge jointly
judge jointly: cydfarnu

judge
judge: n. barnwr, judge: barnu

judgemental
judgemental: adj. barnwrol

juggle
juggle: siwglo

jug
jug: n. jwg

juice
juice: n. sudd

july
July: n. Gorffennaf

jump
jump: neidio

june
June: n. Mehefin

jupiter
Jupiter: n. Iau

jurisprudence
jurisprudence: n. deddfeg

jury
jury: n. rheithgor

justice
justice: n. cyfiawnder

justification
justification: n. cyfiawnhad

justify
justify: cyfiawnhau

juxtapose
juxtapose: cydosod, juxtapose: cyfosod

juxtaposition
juxtaposition: n. cyfosod

keen
keen: adj.sint. blaenllym

keep bees
keep bees: cychio, keep bees: cychu

keep
keep: cadw

keep pace with
keep pace with: cyfredeg

keep silent
keep silent: tewi

keep watch
keep watch: stiwardio

kernel
kernel: n. cnewyllyn

keyboard
keyboard: n. allweddell, keyboard: n. bysellfwrdd, keyboard: n. bysellfwrdd

key in
key in: bysellu

key
key: n. agoriad, key: n. bysell, key: n. allwedd, key: n. allwedd, key: n. cywair, key: adj. allweddol, key: allweddu

keyword
keyword: n. allweddair

khaki
khaki: adj.sint. caci

kicker
kicker: n. ciciwr

kick
kick: cicio

kidnap
kidnap: herwgipio

kill
kill: lladd

kilobyte
kilobyte: n. cilobeit

kilogram
kilogram: n. cilogram

kilolitre
kilolitre: n. cilolitr

kilometre
kilometre: n. cilometr

kind
kind: adj.sint. caredig

kindle
kindle: ennyn, kindle: enynnu

kindness
kindness: n. caredigrwydd

king
king: n. brenin

kinship
kinship: n. carennydd

kiss
kiss: cusanu

kitchen
kitchen: n. cegin

kite
kite: n. barcud

knead
knead: tylino

kneel
kneel: penglinio, kneel: penlinio

knell
knell: toncio

knit
knit: gwau, knit: gweu

knock
knock: cnocio

knot
knot: n. cwlwm

knotwork
knotwork: n. clymwaith

know
know: adnabod

knowledgeable
knowledgeable: adj. gwybodus

knowledge
knowledge: n. gwybodaeth

known
known: adj. gwybyddus, known: adj. hysbys

label
label: n. label, label: labelu

laboratory
laboratory: n. labordy

labour
labour: n. llafur, labour: labro, labour: llafurio, labour: trafaelio, labour: trafaelu

lack
lack: n. diffyg

lactate
lactate: llaethu

ladder
ladder: n. ysgol

lad
lad: n. hogyn

lake
lake: n. llyn

lambast
lambast: lambastio

lamb
lamb: n. oen, lamb: llydnu, lamb: oeni, lamb: wyna

lament
lament: alaethu, lament: galarnadu, lament: oernadu

laminate
laminate: lamineiddio

lamp
lamp: n. lamp

lampoon
lampoon: coegi, lampoon: dychanu

landfill
landfill: n. tirlenwi

land
land: n. tir, land: glanio, land: tirio

landowner
landowner: n. tirfeddiannwr

landscape
landscape: n. tirlun, landscape: tirlunio, landscape: tirweddu

language
language: n. iaith

languish
languish: dadwino, languish: dihoeni

laptop
laptop: n. gliniadur, laptop: n. gliniadur

lasciviousness
lasciviousness: n. trythyllwch

lash
lash: gwialenodi, lash: lasio, lash: leinio, lash: llachio

last
last: adj. diwetha, last: adj. diwethaf, last: adj. olaf, last: para

late
late: adj. hwyr

latency
latency: n. cuddni

lathe
lathe: n. turn

latin
Latin: adj. lladin

laughable
laughable: adj. chwerthinllyd

laugh
laugh: chwerthin

laughter
laughter: n. chwerthin

launch
launch: n. lansiad, launch: lansio

lavender
lavender: n. lafant

lawfulness
lawfulness: n. cyfreithlondeb

law
law: n. cyfraith

lawyer
lawyer: n. cyfreithiwr

layer
layer: n. haen, layer: haenu

lay
lay: adj. lleyg, lay: dodwy, lay: hulio

layout
layout: n. haenlun

laziness
laziness: n. diogi

lazy
lazy: adj.sint. diog

lead about
lead about: cylcharwain

lead a dissolute life
lead a dissolute life: camfucheddu

leader
leader: n. arweinydd, leader: n. arweinydd

leadership
leadership: n. arweinyddiaeth, leadership: adj. arweinyddol

leading
leading: adj. arweiniol, leading: adj. blaenllaw, leading: adj. blaenol

lead jointly
lead jointly: cydarwain

lead
lead: n. plwm, lead: arwain, lead: ledio, lead: tywysio, lead: tywysu

leaf
leaf: deilio

leaflet
leaflet: n. taflen

league
league: n. cynghrair

leap
leap: n. llam, leap: llamu, leap: llemain

learner
learner: n. dysgwr

learning
learning: n. dysg

lease
lease: n. prydles, lease: lesio

leash
leash: cynllyfanu

leather
leather: n. lledr

leave
leave: gadael

leaven
leaven: lefeinio

lecture
lecture: n. darlith, lecture: darlithio

leek
leek: n. cenhinen

left
left: adj. chwith

legacy
legacy: n. etifeddiaeth

legalise
legalise: cyfreithloni

legal
legal: adj. cyfreithiol

legislation
legislation: n. deddfwriaeth

legislative
legislative: adj. deddfwriaethol

leisure
leisure: n. hamdden

leisurely
leisurely: adj. hamddenol

lend
lend: benthyca

lengthen
lengthen: hwyhau

length
length: n. hyd

leprosy
leprosy: n. gwahan glwyf

lesson
lesson: n. gwers

letter
letter: n. llythyr, letter: n. llythyren

level
level: n. lefel, level: gwastatáu, level: gwastatu, level: lefelu, level: llyfnhau

liability
liability: n. atebolrwydd

libel
libel: n. enllib

liberal
liberal: adj. rhyddfrydig

liberation
liberation: n. rhyddhad

librarian
librarian: n. llyfrgellydd, librarian: n. llyfrgellwr

library
library: n. llyfrgell, library: n. rhaglengell

licensed
licensed: adj. trwyddedig

license
license: n. trwydded, license: trwyddedu

lick
lick: llyfu, lick: llyo, lick: llyu

lie down
lie down: gorwedd

lie
lie: celwyddo

lien
lien: n. hawlrwym

life
life: n. bywyd, life: n. byw

lift
lift: codi, lift: cyfodi

lighten
lighten: ysgafnhau, lighten: ysgafnu

light
light: n. goleuad, light: n. goleuni, light: n. golau, light: adj.sint. ysgafn, light: cynnau, light: cynnu

like
like: pr. fel, like: adj. cyfryw, like: hoffi, like: leicio, like: licio

likely
likely: adj. tebygol

liken
liken: tebygu

lime
lime: calchio, lime: calchu

limitation
limitation: n. cyfyngiad

limited
limited: adj. cyfyngedig

limit
limit: n. terfyn, limit: cyfyngu

limp
limp: cloffi, limp: hencian, limp: hercian

linear
linear: adj. llinol

linefeed
linefeed: n. llinborthiad

line
line: n. llinell, line: n. lein

linen
linen: n. lliain, linen: adj. lliain

linguistic
linguistic: adj. ieithyddol

linguistics
linguistics: n. ieithyddiaeth

link arms
link arms: breichio

linked
linked: adj. cysylltiedig

link
link: n. dolen, link: n. cyswllt, link: cysylltu

lion
lion: n. llew

liquidise
liquidise: hylifo

liquid
liquid: n. hylif, liquid: adj. hylifol

listed
listed: adj. rhestredig

listen again
listen again: ailwrando

listen carefully
listen carefully: ymwrando

listen hard
listen hard: clustfeinio

listen
listen: erglywed, listen: gwrando

listing
listing: n. rhestriad

list
list: n. rhestr, list: rhestru

litany
litany: n. litani

literacy
literacy: n. llythrennedd

literally
literally: adj. llythrennol

literariness
literariness: n. llenyddoldeb

literary
literary: adj. llenyddol

literature
literature: n. llenyddiaeth, literature: n. llên

litigate
litigate: cyfreithio

litre
litre: n. litr

litterateur
litterateur: n. llenor

little bit
little bit: n. tipyn

live dissolutely
live dissolutely: ofera

livelihood
livelihood: n. bywoliaeth

live like a hermit
live like a hermit: meudwyo

lively
lively: adj. bywiog

liveness
liveness: n. bywioldeb

liver
liver: n. iau

live together
live together: cydfyw

loaded
loaded: adj. llwythedig, loaded: adj. llwythog

loader
loader: n. llwythydd

load
load: n. llwyth, load: llwytho

loaf
loaf: n. torth

loan
loan: n. benthyciad, loan: n. benthyg

local
local: adj. lleol

locate
locate: lleoli

location
location: n. lleoliad

locator
locator: n. lleolydd

lock
lock: n. clo, lock: cloi

locus
locus: n. locws

lodge
lodge: lletya

lodge together
lodge together: cydletya

lodging
lodging: n. llety

logarithmic
logarithmic: adj. logarithmig

logarithm
logarithm: n. logarithm

logical
logical: adj. rhesymegol

logic
logic: n. rhesymeg

login
login: n. mewngofnod

logistic
logistic: adj. logistaidd

logo
logo: n. logo

log out
log out: allgofnodi

loiter
loiter: loetran, loiter: tindroi, loiter: ymchwarae, loiter: ymdroi

lonely
lonely: adj.sint. unig

long-established
long-established: adj. hirsefydledig

longevity
longevity: n. hir hoedledd

long for
long for: dyheu, long for: hiraethu

longing
longing: n. hiraeth

long
long: adj.sint. hir

longstanding
longstanding: adj. hirsefydlog

long-term
long-term: n. hirdymor, long-term: adj. tymor-hir

long-winded
long-winded: adj. hirfaith

look again
look again: ailedrych

look
look: n. edrychiad, look: n. golwg, look: edrych, look: edrychyd, look: sbio, look: sbïo, look: ysbïo

loop
loop: n. dolen

loose
loose: adj. llaes

lop
lop: brigdorri

lop the top off
lop the top off: brigladd

lord it
lord it: lordio

lord
lord: n. arglwydd

lose heart
lose heart: digalonni, lose heart: gwangalonni, lose heart: llwfrhau

lose
lose: colli

lose oneself
lose oneself: ymgolli

loser
loser: n. colledwr, loser: n. collwr

loss
loss: n. colled

lossy
lossy: adj. gollyngus

lost
lost: adj. coll, lost: adj. colledig

lottery
lottery: n. loteri, lottery: n. lotri

loudspeaker
loudspeaker: n. uchelseinydd

lounge
lounge: lolian

louse
louse: n. lleuen

love
love: n. cariad, love: caru, love: serchu

lower-case letter
lower-case letter: n. islythyren

lower-case
lower-case: adj. islythrennol

lower
lower: gostwng, lower: iselhau, lower: iselu

low
low: adj.sint. isel

loyalty
loyalty: n. teyrngarwch

ltd
ltd: adj. cyf

luck
luck: n. lwc

lucky
lucky: adj.sint. lwcus

lumbago
lumbago: n. llwynwst

lunar
lunar: adj. lleuadol

lung
lung: n. ysgyfaint

lurch
lurch: rhoncio

lurk
lurk: lercio, lurk: llercian

lust after
lust after: chwantu

luxurious
luxurious: adj. moethus

machine
machine: n. peiriant

mad
mad: adj. gwallgof

madrigal
madrigal: n. madrigal

magazine about poetry
magazine about poetry: n. Barddas

magazine
magazine: n. cylchgrawn

magazines
magazines: n. cylchgronau

magenta
magenta: adj. magenta

magic
magic: adj. hud

magistrate
magistrate: n. ynad

magnanimity
magnanimity: n. mawrfrydigrwydd

magnetic
magnetic: adj. magnetig

magnetise
magnetise: magneteiddio

magnetism
magnetism: n. magneteg

mailer
mailer: n. ebostydd

majority
majority: n. mwyafrif

make amends
make amends: dadolwch, make amends: dadolychu

make a pact
make a pact: cytundebu

make a speech
make a speech: areithio

make a united effort
make a united effort: cydymdrechu

make concrete
make concrete: diriaethu

make crumbs
make crumbs: briwsioni

make effective
make effective: effeithioli

make famous
make famous: enwogi

make meal
make meal: blodio

make oneself at home
make oneself at home: ymgartrefu

make progress
make progress: ymlwybro

make ready
make ready: ymbaratoi

make suitable
make suitable: gwedduso

make unpleasant
make unpleasant: anhyfrydu

make war
make war: rhyfela

make weather-proof
make weather-proof: diddosi

male
male: adj. gwryw

malformatted
malformatted: adj. camffurfiedig

malformed
malformed: adj. camffurfiedig

malign
malign: difrïo

malnutrition
malnutrition: n. cam-faeth

malt
malt: n. brag

manage
manage: rheoli

management
management: n. rheolaeth

manager
manager: n. rheolydd, manager: n. rheolwr

mandate
mandate: mandadu

mandatory
mandatory: adj. gorfodol

manipulator
manipulator: n. trinydd

mankind
mankind: n. dynolryw

manly
manly: adj. gwrywaidd

man
man: n. dyn, man: n. gwr

manna
manna: n. manna

manufactured item
manufactured item: n. gweithgynnyrch

manufacturer
manufacturer: n. gwneuthurwr

manure land
manure land: gwerydu

manure
manure: gwrteithio, manure: teilo

manuscript
manuscript: n. llawysgrif

many
many: adj. llawer, many: adj. sawl

map
map: n. map

mapped
mapped: adj. mapiedig

mapper
mapper: n. mapiwr

mapping
mapping: n. mapiad

marble
marble: n. marmor

march
March: n. Mawrth, march: gorymdeithio, march: martsio, march: ymdeithio

margarine
margarine: n. margarîn

marginal
marginal: adj. ymylol

margin
margin: n. ymyl, margin: n. gorswm

marine
marine: adj. morol

mariner
mariner: n. mordwywr

marker
marker: n. marciwr

market-conscious
market-conscious: adj. marchnad-ymwybodol

market
market: n. marchnad

mark
mark: n. marc, mark: marcio

marriage
marriage: n. priodas

married
married: adj. priod

marry
marry: priodi

marshal
marshal: byddino

mars
Mars: n. Mawrth

martyrdom
martyrdom: n. merthyrdod

martyr
martyr: merthyru

marvel
marvel: n. rhyfeddod

mash
mash: stompio, mash: stwmpo, mash: stwnsio

mask
mask: n. masg, mask: n. mwgwd, mask: masgio, mask: mwgydu, mask: mygydu

mass
mass: n. màs

masterly
masterly: adj. gorchestol

master
master: n. meistr, master: meistroli

masterpiece
masterpiece: n. campwaith

master view
master view: n. meistrolwg

matching
matching: adj. cydweddol

match
match: n. cydweddiad

mate
mate: n. cyfaill

materialism
materialism: n. materoliaeth

material
material: n. defnydd, material: n. deunydd, material: adj. materol

maternity
maternity: n. mamolaeth

mathematical
mathematical: adj. mathemategol

mathematics
mathematics: n. mathemateg

matriculate
matriculate: matriciwleiddio

matrimonial
matrimonial: adj. priodasol

matrix
matrix: n. matrics

matte
matte: adj. di-sglein

matter
matter: n. mater

mature
mature: adj. aeddfed, mature: aeddfedu

maturity
maturity: n. aeddfedrwydd

mausoleum
mausoleum: n. beddadail

maximum
maximum: n. uchafrif, maximum: n. uchafbwynt, maximum: n. mwyafswm, maximum: n. uchafswm, maximum: adj. eithaf, maximum: adj. uchafsymiol

may
May: n. Mai

mayor
mayor: n. maer

mead
mead: n. medd

meal
meal: n. pryd

meander
meander: ymddolennu

meaningful
meaningful: adj. ystyrlon

meaning
meaning: n. ystyr

mean
mean: n. cymedr, mean: adj.sint. cymedrig

means
means: n. modd

measurable
measurable: adj. mesuradwy

measure
measure: n. mesur, measure: mesuro

measurement
measurement: n. mesuriad

meat
meat: n. cig

mechanical
mechanical: adj. mecanyddol, mechanical: adj. peirianyddol

mechanise
mechanise: mecaneiddio

mechanism
mechanism: n. mecanwaith, mechanism: n. peirianwaith

meddle
meddle: busnesa, meddle: busnesu, meddle: ymhél

median
median: n. canolrif

medical
medical: adj. meddygol

medicine
medicine: n. meddyginiaeth, medicine: n. meddygaeth

medieval
medieval: adj. canoloesol

meditate
meditate: ymbwyllo

medium
medium: n. cyfrwng, medium: adj. canolig

medium-term
medium-term: adj. tymor-canol

meeting
meeting: n. cyfarfod, meeting: n. cwrdd

meet
meet: cwrdd

megabyte
megabyte: n. megabeit

melancholy
melancholy: adj. pruddglwyfus

melt
melt: toddi, melt: ymdoddi

member
member: n. aelod

membership
membership: n. aelodaeth

memento
memento: n. cofarwydd

memoir
memoir: n. cofiant

memorandum
memorandum: n. memorandwm

memory
memory: n. cof

mend
mend: trwsio

mental
mental: adj. meddyliol

mention
mention: crybwyll, mention: sôn, mention: sonio

menu
menu: n. dewislen

merchandise
merchandise: n. marsiandïaeth

merciful
merciful: adj. trugarog

mercury
mercury: n. fercwri, Mercury: n. Mercher

merged
merged: adj. cyfun

merry
merry: adj.sint. llawen

mesentery
mesentery: n. cefndedyn

mesmerise
mesmerise: mesmereiddio

message
message: n. neges

messenger
messenger: n. negesydd

mess
mess: n. llanast, mess: n. llanastr, mess: n. smonach

mess up
mess up: llanastru

metabolism
metabolism: n. metaboleg

metadata
metadata: n. metadata

metainfo
metainfo: n. metagwybodaeth

metallurgy
metallurgy: n. metelyddiaeth

metal
metal: n. metel

meter
meter: n. mesurydd

method
method: n. dull

methodology
methodology: n. methodoleg

metonymy
metonymy: n. trawsenwad

metre
metre: n. metr, metre: n. mydr

metricate
metricate: metrigeiddio

metric
metric: adj. metrig

mew
mew: mewian

micrometre
micrometre: n. micromedr

middle
middle: n. canol

midst
midst: n. mysg, midst: n. plith

midwife
midwife: n. bydwraig

midwifery
midwifery: n. bydwreigiaeth

mighty
mighty: adj. grymus

migration
migration: n. mudiad

mildew
mildew: n. llwydi

mile
mile: n. milltir

milestone
milestone: n. carreg filltir

military
military: adj. milwrol

militate
militate: milwrio

milk
milk: n. llaeth, milk: godro

millennium
millennium: n. mileniwm

milligram
milligram: n. miligram

millilitre
millilitre: n. mililitr

millimetre
millimetre: n. milimetr

million
million: n. miliwn

millionth
millionth: adj. miliynfed

millisecond
millisecond: n. milieiliad

mill
mill: n. melin

mime
mime: meimio

mince
mince: briwio

mind
mind: n. bryd, mind: meindio

mine
mine: n. ffrwydryn, mine: n. cloddfa, mine: cloddio, mine: mwyngloddio

mineral
mineral: n. mwyn

miner
miner: n. mwyngloddwr

minimalist
minimalist: adj. lleiafol

minimise
minimise: minimeiddio

minimum
minimum: n. isafrif, minimum: n. isafbwynt, minimum: n. isafswm, minimum: n. lleiafswm

minister
minister: n. gweinidog, minister: gweinidogaethu, minister: offeiriadu

minority
minority: n. lleiafrif, minority: adj. lleiafrifol

minus
minus: n. minws

minute
minute: n. munud

mirror
mirror: n. drych

misanthropy
misanthropy: n. dyn gasedd

misapprehend
misapprehend: camfeddwl

misbehave
misbehave: camfihafio, misbehave: camymddwyn

miscalculate
miscalculate: camgyfrifo

miscall
miscall: camenwi

miscount
miscount: camrifo

misdemeanour
misdemeanour: n. camymddygiad

misinterpret
misinterpret: camddehongli

misjudge
misjudge: camfarnu

mislay
mislay: camosod

misleading
misleading: adj. camarweiniol

mislead
mislead: camarwain, mislead: camgyfarwyddo, mislead: camhysbysu

mismatch
mismatch: n. anghydweddiad

mismutate
mismutate: camdreiglo

misplace
misplace: camleoli

mispronounce
mispronounce: camacennu

misrepresent
misrepresent: camddarlunio, misrepresent: camliwio

missing
missing: adj. coll

mission
mission: n. cenhadaeth

miss
miss: misio

mis-spelling
mis-spelling: n. camsillafiad

mis-spell
mis-spell: camsillafu

mistake
mistake: n. camgymeriad, mistake: camdybio, mistake: camgymryd, mistake: camsynio

mistime
mistime: camamseru

mist
mist: n. niwl

mistype
mistype: camdeipio

misunderstanding
misunderstanding: n. camddealltwriaeth

misunderstand
misunderstand: camddeall

misuse
misuse: camarfer, misuse: camddefnyddio

mitch
mitch: mitsio

mitigate
mitigate: lleddfu

mixed
mixed: adj. cymysg

mixer
mixer: n. cymysgydd

mix
mix: cyfathrach, mix: cyfathrachu, mix: cymysgu

mixture
mixture: n. cymysgedd

mobile
mobile: adj. symudol

mobilise
mobilise: llueddu, mobilise: lluyddu, mobilise: ymfyddino

moccasin
moccasin: n. mocasin

mock
mock: gwawdio

modeline
modeline: n. moddlinell

model
model: n. model, model: n. model, model: modelu

models
models: n. modelau

modem
modem: n. modem

mode
mode: n. modd

moderated
moderated: adj. cymedroledig

moderate
moderate: n. cymedrolwr, moderate: adj. cymedrol, moderate: cymedroli, moderate: llarieiddio, moderate: tirioni

modernise
modernise: moderneiddio

modern
modern: adj. cyfoes, modern: adj. modern

modification
modification: n. addasiad

modifier
modifier: n. addasydd

modularise
modularise: modiwlareiddio

modulate
modulate: modylu

module
module: n. modiwl, module: n. modiwl

moisten
moisten: gwlychu

molecule
molecule: n. molecwl

molest
molest: dygnu

moment
moment: n. moment

momentum
momentum: n. momentwm

monday
Monday: n. Dydd Llun

monetary
monetary: adj. ariannol

moneybox
moneybox: n. cadw-mi-gei

money
money: n. arian, money: n. pres

monitor jointly
monitor jointly: cydfonitro

monitor
monitor: n. monitor, monitor: n. dangosydd, monitor: monitro

monochrome
monochrome: adj. unlliw

monogamy
monogamy: n. unwreigiaeth

monoglot
monoglot: adj. uniaith

monopoly
monopoly: n. monopoli

monospaced
monospaced: adj. unlled

monotheism
monotheism: n. undduwiaeth

monsoon
monsoon: n. monswn

monstrosity
monstrosity: n. anferthedd

monthly
monthly: adj. misol

month
month: n. mis

moon
moon: n. lleuad

mope
mope: mopio

moraine
moraine: n. marian

moralise
moralise: moesoli

morality
morality: n. moes

moral
moral: adj. moesol

more
more: n. rhagor

more than
more than: pr. yn anad

morning
morning: n. bore

morphology
morphology: n. ffurfianneg

mortality
mortality: n. marwoldeb

mortgage
mortgage: n. morgais, mortgage: morgeisio

mortify
mortify: marweiddio, mortify: marwhau

mortise
mortise: morteisio

mosaic
mosaic: n. patrymwaith

mosque
mosque: n. mosg

moss
moss: n. mwsogl

mother
mother: n. mam, mother: mamogi

mother-tongue
mother-tongue: n. mamiaith

motivate
motivate: symbylio, motivate: symbylu, motivate: ysbarduno

motivation
motivation: n. cymhelliant

motor
motor: n. modur, motor: moduro

motto
motto: n. arwyddair

mould
mould: moldio, mould: mowldio

mountable
mountable: adj. clymadwy

mountain
mountain: n. mynydd

mounted
mounted: adj. clymedig

mount
mount: mowntio

mournful
mournful: adj. galarnadus

mourn
mourn: marwnadu, mourn: mwrnio

mouse
mouse: n. llygoden

mouth
mouth: n. ceg, mouth: cega

movement
movement: n. symudiad

move
move: symud, move: ymod

mow with a scythe
mow with a scythe: pladuro

mp
MP: n. AS

msec
msec: n. meil

muck out
muck out: carthu

muddled
muddled: adj. cymysglyd

muddle
muddle: codlo, muddle: ponsio

muddle through
muddle through: bacsu

multi-agency
multi-agency: adj. aml-asiantaethol

multicultural
multicultural: adj. aml-ddiwylliannol

multidisciplinary
multidisciplinary: adj. aml-ddisgyblaethol

multihead
multihead: adj. amlben

multi-lingual
multi-lingual: adj. aml-iaith

multinomial
multinomial: n. lluosnomial

multipart
multipart: adj. amlran

multiplayer
multiplayer: adj. amlchwaraewr

multiple
multiple: n. lluosrif, multiple: adj. lluosol

multiplexer
multiplexer: n. amlblecsydd

multiplicative
multiplicative: adj. lluosogol

multiply
multiply: lluosi, multiply: lluosogi

multi-professional
multi-professional: adj. aml-broffesiynol

multi-purpose
multi-purpose: adj. aml-bwrpas

multi-sport
multi-sport: adj. aml-chwaraeon

multi-use
multi-use: adj. aml-ddefnydd

mumble
mumble: myngial

mummy
mummy: n. mwmi

mural
mural: n. murlun

murder
murder: llofruddio, murder: mwrdro

murmer
murmer: murmuro

murmur
murmur: sisial

muscle
muscle: n. cyhyr

muscular
muscular: adj. cyhyrog

muse
muse: n. awen, muse: pensynnu

museum
museum: n. amgueddfa

musical
musical: adj. cerddorol

music
music: n. cerddoriaeth, music: n. cerdd

musk
musk: n. mwsg

mustard
mustard: n. mwstard

muster
muster: mwstro

mutate
mutate: treiglo

mutation
mutation: n. treiglad

mutilate
mutilate: llurgunio

mutter
mutter: mwmial, mutter: mwmialu, mutter: mwmian, mutter: swnial

my
my: det.pos. fy

myrrh
myrrh: n. myrr

mysticism
mysticism: n. cyfriniaeth

mythology
mythology: n. chwedloniaeth

nag
nag: cwrnad

nail
nail: hoelio

naked
naked: adj. noeth

name
name: n. enw, name: cyfenwi, name: enwi

nap cloth
nap cloth: cedenu

nape
nape: n. gwar

narcotic
narcotic: n. cysgbair

narrow
narrow: adj. cul, narrow: culhau, narrow: meinhau

nasty
nasty: adj.sint. cas

nationalise
nationalise: cenedlaetholi, nationalise: gwladoli

nationalism
nationalism: n. cenedlaetholdeb

nationalist
nationalist: adj. cenedlaetholgar

national
national: adj. cenedlaethol, national: adj. gwladol

nation
nation: n. cenedl

natural
natural: adj. naturiol

nature
nature: n. natur

navigator
navigator: n. llywiwr

nearby area
nearby area: n. cyffin

near
near: pr. ar gyfyl

neat
neat: adj.sint. twt

necessary
necessary: adj. angenrheidiol, necessary: adj. gofynnol

necessity
necessity: n. angenrheidrwydd, necessity: n. rheidrwydd, necessity: n. rhaid, necessity: n. anghenraid

nectar
nectar: n. neithdar

need
need: n. angen

needy
needy: adj. anghenus

negate
negate: negyddu

negative
negative: adj. negatif, negative: adj. negyddol

neglect
neglect: esgeuluso

negligence
negligence: n. esgeulustod, negligence: n. esgeulustra

negotiate
negotiate: negeseua

negotiation
negotiation: n. negodiad

neighbourhood
neighbourhood: n. cymdogaeth

neighbour
neighbour: n. cymydog

nervousness
nervousness: n. nerfusrwydd

nestle
nestle: ymnythu

nest
nest: n. nyth, nest: nythu

net
net: n. rhwyd

network
network: n. rhwydwaith

neuralgia
neuralgia: n. gieuwst

neurasthenia
neurasthenia: n. nerfwst

neurosis
neurosis: n. newrosis

neutralise
neutralise: niwtraleiddio

neutrality
neutrality: n. niwtraliaeth

never
never: adv. erioed

newbie
newbie: n. dechreuwr

new
new: adj.sint. newydd

next-day
next-day: adj. diwrnod-wedyn

next to
next to: pr. nesaf at

nibble
nibble: daintio, nibble: deintio

nice
nice: adj.sint. neis

nickname
nickname: glasenwi, nickname: llysenwi

nick
nick: n. ffugenw

nicotine
nicotine: n. nicotin

night before last
night before last: n. echnos

nightmare
nightmare: n. hunllef

night
night: n. nos, night: n. noson

nimble
nimble: adj. chwim, nimble: adj. sionc

nine
nine: adj. naw

ninth
ninth: adj. nawfed

nitrate
nitrate: n. nitrad

nitrogen
nitrogen: n. nitrogen

node
node: n. nod

nod
nod: amneidio

nod off
nod off: hepian

noise
noise: n. swn

nominal
nominal: adj. enwol

nominated
nominated: adj. enwebedig

nominate
nominate: enwebu

nomination
nomination: n. enwebiad

nonagon
nonagon: n. nonagon

non-availability
non-availability: n. anargaeledd

non-empty
non-empty: adj. anwag

non-exclusive
non-exclusive: adj. an-anghynhwysol

non-identifiable
non-identifiable: adj. anadnabyddadwy

non-inclusive
non-inclusive: adj. anghynhwysol

non-inflected
non-inflected: adj. diffurfdro

non-local
non-local: adj. anleol

non-negative
non-negative: adj. annegatif

nonprinting
nonprinting: adj. diargraff

non-proportional
non-proportional: adj. anghyfrannol

non-quantifiable
non-quantifiable: adj. anfesuradwy

non-representational
non-representational: adj. anghynrychioliadol

non-representative
non-representative: adj. anghynrychiadol

non-standard
non-standard: adj. ansafonol

non-statutory
non-statutory: adj. anstatudol

non-welsh speaking
non-Welsh speaking: adj. di-Gymraeg

normal
normal: adj. normal

norm
norm: n. norm

north-east
north-east: n. gogledd-ddwyrain

northern
northern: adj. gogleddol

north
north: n. gogledd

north-west
north-west: n. gogledd-orllewin

nose
nose: n. trwyn, nose: trwyno

nostalgia
nostalgia: n. hiraeth

not applicable
not applicable: adj. amherthnasol

notation
notation: n. nodiant

notch
notch: n. rhic, notch: danheddu, notch: rhicio

note
note: n. nodiad, note: nodi

notice
notice: sylwi

notification
notification: n. hysbysiad

notified
notified: adj. hysbysedig

notifier
notifier: n. hysbysydd

not
not: adv. ddim

nought
nought: n. dim

nourishment
nourishment: n. maeth

nourish
nourish: llithio

novel
novel: n. nofel

november
November: n. Tachwedd

novice
novice: n. dechreuwr

now
now: adv. rwan, now: adv. rwan

nozzle
nozzle: n. ffroenell

nth
nth: adj. nfed

nuance
nuance: n. gwawr

nuclear
nuclear: adj. niwclear

nudge
nudge: penelinio, nudge: pwtio

nuisance
nuisance: n. niwsans

nullify
nullify: dirymu

null
null: n. nwl

number
number: n. rhif, number: n. rhifyn, number: n. nifer, number: n. rhifyn

numeracy
numeracy: n. rhifedd

numeral
numeral: n. rhifolyn

numerator
numerator: n. rhifiadur

numerical
numerical: adj. rhifiadol

numeric
numeric: adj. rhifol

numerous
numerous: adj. niferus

nurse
nurse: n. nyrs, nurse: nyrsio

nurture
nurture: meithrin

nutritious
nutritious: adj. maethlon

oak
oak: n. derwen

obedience
obedience: n. ufudd-dod

obesity
obesity: n. gordewdra

obey
obey: ufuddhau

obfuscated
obfuscated: adj. drysedig

objective
objective: n. amcan, objective: adj. gwrthrychol

objectivity
objectivity: n. gwrthrychedd

object
object: n. gwrthrych

obligation
obligation: n. gorfodaeth, obligation: n. rhwymedigaeth

obliged
obliged: adj. rhwym

oblique
oblique: adj. lletraws

oblong
oblong: n. hirsgwar, oblong: adj. hirsgwar

observation
observation: n. arsylwad

observe
observe: arsylwi

obsolete
obsolete: adj. anarferedig

obstacle
obstacle: n. rhwystr

obstruct
obstruct: afrwyddo

obtuse
obtuse: adj. aflym

obvious
obvious: adj. amlwg

occasionalism
occasionalism: n. achlysuraeth

occasional
occasional: adj. achlysurol, occasional: adj. ambell

occasion
occasion: n. achlysur, occasion: achlysuro

occident
occident: n. gorllewin

octagon
octagon: n. octagon

octahedron
octahedron: n. octahedron

octal
octal: adj. wythol

octatetraene
octatetraene: n. octatetraen

octet
octet: n. wythawd

october
October: n. Hydref

odd number
odd number: n. odrif, odd number: n. odrif

odd
odd: adj.sint. od

ode
ode: n. awdl

oeuvre
oeuvre: n. cyfanwaith

of equal weight
of equal weight: adj. cytbwys

offence
offence: n. tramgwydd

offer
offer: n. cynnig, offer: cynigio, offer: cynnig

office
office: n. swyddfa

officer
officer: n. swyddog

official
official: adj. swyddogol

offline
offline: adj. all-lein

offset
offset: n. atred

off-topic
off-topic: adj. amherthnasol

of
of: pr. o

oil
oil: n. olew, oil: oelio

old-fashioned
old-fashioned: adj. henaidd

old
old: adj.sint. hen

ombudsman
ombudsman: n. ombwdsmon

omit
omit: hepgor

one
one: adj. un

one side
one side: n. neilltu

one third
one third: n. traean

online
online: adj. arlein, online: adj. ar-lein

only
only: adj. unig

on
on: pr. ar

on the edge of
on the edge of: pr. ar ymyl

on the point of
on the point of: pr. ar fedr, on the point of: pr. ar fin

on the side of
on the side of: pr. ar ochr

on top of
on top of: pr. ar ben

oops
oops: n. wps

opacity
opacity: n. didreiddedd

opaque
opaque: adj. afloyw

opened
opened: adj. agoredig

opening
opening: adj. agoriadol

open
open: adj. agored, open: agor

operate
operate: gweithredu

operation
operation: n. gweithrediad, operation: n. llawdriniaeth

operator
operator: n. gweithredydd

opinion
opinion: n. barn

opponent
opponent: n. gwrthwynebwr

opportunity
opportunity: n. cyfle

oppose
oppose: gwrthwynebu

opposite
opposite: pr. gyferbyn â, opposite: n. gwrthwyneb, opposite: adj. cyferbyn

opposition
opposition: n. gwrthwynebiad, opposition: n. gwrthblaid

opposition vote
opposition vote: n. gwrthbleidlais

oppressive
oppressive: adj. llethol

oppress
oppress: gormesu, oppress: llethu

opprobrium
opprobrium: n. gwarth

optimism
optimism: n. optimistiaeth

option
option: n. dewisiad, option: n. opsiwn

optometrist
optometrist: n. optometrydd

oral
oral: adj. geneuol

orange
orange: n. oren

orchid
orchid: n. tegeirian

ordain
ordain: ordeinio

order
order: n. trefn, order: n. archeb, order: archebu

ordinal
ordinal: adj. trefnol

ordnance
ordnance: n. ordnans

organic
organic: adj. organig

organisation
organisation: n. mudiad, organisation: n. trefniadaeth

organiser
organiser: n. trefnydd, organiser: n. trefnwr

oriental
oriental: adj. dwyreiniol

orientation
orientation: n. cyfeiriadaeth

orienteer
orienteer: cyfeiriannu

originality
originality: n. gwreiddioldeb

original
original: adj. gwreiddiol

originate
originate: hanu, originate: tarddu

origin
origin: n. tardd

ornament
ornament: n. addurn

ornate
ornate: adj. addurn

or
or: cnjcoo. neu

orphaned
orphaned: adj. amddifad

orthodox
orthodox: adj. uniongred

orthopaedic
orthopaedic: adj. orthopedig

orthoptist
orthoptist: n. orthoptydd

osier
osier: n. mêr-helygen

ossify
ossify: asgwrneiddio

ostentation
ostentation: n. rhodres

ostentatious
ostentatious: adj. rhodresgar

other
other: n. cilydd, other: adj. arall

ounce
ounce: n. owns

our
our: det.pos. ein

out-and-out
out-and-out: adj. rhonc

outcome
outcome: n. canlyniad

outgoing
outgoing: adj. allfynd

outgrow
outgrow: gordyfu

outline
outline: n. amlinell, outline: n. amlinelliad, outline: amlinellu

output
output: n. allbwn, output: allbynnu

outside
outside: n. tu allan

outturn
outturn: n. alldro

oval
oval: adj. hirgrwn

oven
oven: n. popty

overarching
overarching: adj. trosfwaol

overcome
overcome: goresgyn, overcome: gorthrechu, overcome: gorthrymu

overcomplexity
overcomplexity: n. gorgymhlethdod

overdraft
overdraft: n. gorgodiad, overdraft: n. gorddrafft

overemphasise
overemphasise: gorbwysleisio

overfill
overfill: gorlenwi

overflow
overflow: gorlifo

over-frequent
over-frequent: adj. gorfynych

over-fulfil
over-fulfil: gorgyflenwi

overheat
overheat: gorboethi

overlap
overlap: n. gorgyffyrddiad, overlap: gorgyffwrdd

overload
overload: gorlwytho

over
over: pr. tros, over: pr. dros

overpower
overpower: trechu

overrule
overrule: goruwchlywodraethu

overshadow
overshadow: cymylu

oversight
oversight: n. goruchwyliaeth

overstate
overstate: gor-ddweud

overtake
overtake: goddiweddyd

overthrow
overthrow: n. dymchweliad

overtire
overtire: gorflino

overturn
overturn: dymchwel

overuse
overuse: gorddefnyddio

overvalue
overvalue: gorbrisio

overview
overview: n. arolwg, overview: n. trosolwg

overwhelming
overwhelming: adj. anorthrech

overwork
overwork: gorweithio

overwrite
overwrite: trosysgrifo

owner
owner: n. perchennog

ownership
ownership: n. perchenogaeth, ownership: n. perchnogaeth

own
own: meddu

oxide
oxide: n. ocsid

oxidise
oxidise: ocsidio

ox
ox: n. ych

oxygen
oxygen: n. ocsigen

pacify
pacify: gostegu, pacify: heddychu, pacify: hyweddu, pacify: llonyddu, pacify: tangnefeddu

package
package: n. pecyn

packager
packager: n. pecynnwr

packet
packet: n. paced

pack
pack: pacio

paddle
paddle: padlo, paddle: rhodli

pad
pad: n. pad

page
page: n. tudalen

pager
pager: n. swnydd

paginator
paginator: n. tudalennydd

pain
pain: n. poen

paint
paint: n. paent, paint: arlunio, paint: paentio, paint: peintio

pair of scissors
pair of scissors: n. siswrn

pair
pair: n. pâr, pair: paru

palace
palace: n. palas

palatalise
palatalise: taflodi

pale
pale: adj. gwan

palette
palette: n. paled

palindromic
palindromic: adj. palindromig

palmtop
palmtop: n. llawiadur

pamper
pamper: maldodi

pancreas
pancreas: n. cefndedyn

panel
panel: n. panel

pane
pane: n. cwarel

paper
paper: n. papur, paper: papuro

parachute
parachute: parasiwtio

paraffin
paraffin: n. paraffin

paragraph
paragraph: n. paragraff

parallelogram
parallelogram: n. paralelogram

parallel
parallel: adj. cyfochrog, parallel: adj. paralel

paralyse
paralyse: parleisio, paralyse: parlysu

paralysis
paralysis: n. parlys

paramedic
paramedic: n. parafeddyg

parameter
parameter: n. paramedr

paranoid
paranoid: adj. paranoiaidd

paraphrase
paraphrase: aralleirio

parcel
parcel: n. parsel

pardon
pardon: pardynu

parent
parent: n. rhiant

pare
pare: rhasglu

parish
parish: n. plwyf

park
park: n. parc, park: parcio, park: parco

parliamentary
parliamentary: adj. seneddol

parliament
parliament: n. senedd

parochialise
parochialise: plwyfoli

par
par: n. llawnwerth

parsed
parsed: adj. dosranedig

parse
parse: dosrannu

parser
parser: n. dosrannydd

parsley
parsley: n. persli

part-fulfilment
part-fulfilment: n. ran-gyflenwad

partial
partial: adj. rhannol

participant
participant: n. cyfrannog

participate in
participate in: cyfranogi

participate
participate: cydgyfranogi

participation
participation: n. cyfranogiad

particle
particle: n. gronyn

particular
particular: adj. neilltuol

partner
partner: n. partner

partnership
partnership: n. partneriaeth, partnership: adj. partneriaethol

part
part: n. rhan

part-time
part-time: adj. rhan-amser

party
party: n. plaid, party: n. parti

passive
passive: adj. goddefol

pass
pass: n. adwy, pass: pasio

passphrase
passphrase: n. cyfrinymadrodd

passport
passport: n. pasport

password
password: n. cyfrinair

paste
paste: pastio

past
past: pr. heibio, past: n. gorffennol

pasture
pasture: porfelu

patch
patch: clemio, patch: clytio

path
path: n. llwybr

patience
patience: n. amynedd

patient
patient: n. claf, patient: adj. amyneddgar

patriotism
patriotism: n. gwladgarwch

patronise
patronise: noddi

pattern
pattern: n. patrwm

paused
paused: adj. oediedig

pause
pause: n. saib, pause: oedi, pause: seibio

pavement
pavement: n. palmant

pave
pave: palmantu

paw
paw: pawennu

pay homage
pay homage: gwrogi

pay in advance
pay in advance: blaendalu

payment
payment: n. taliad, payment: n. tâl

pay
pay: talu

peaceful
peaceful: adj. heddychlon

peace
peace: n. heddwch

peak
peak: n. ban

peck
peck: cnocellu

pedant
pedant: n. pedant

peddle
peddle: pedlera

peel
peel: digennu, peel: dirisglo, peel: pilio, peel: pilo, peel: rhisglio

peep
peep: ciledrych, peep: cipedrych, peep: pipio, peep: sbecian

peer
peer: n. cydradd

peg
peg: pegio

penalise
penalise: penydio

pencil
pencil: n. pensil

penetrate
penetrate: athreiddio, penetrate: treiddio

penetration
penetration: n. treiddgarwch

pennant
pennant: n. penwn

penny
penny: n. ceiniog

pen
pen: buarthu, pen: corlannu, pen: cytio, pen: llocio

pension
pension: n. pensiwn

pentagon
pentagon: n. pentagon

pentagram
pentagram: n. pentagram

pentomino
pentomino: n. pentomino

people
people: n. pobl, people: n. pobol

pepper
pepper: n. pupur

perceived
perceived: adj. canfyddedig

perceive
perceive: tremio, perceive: tremu

percentage
percentage: n. canran

perceptible
perceptible: adj. canfyddadwy

perception
perception: n. canfyddiad

perceptive
perceptive: adj. clustfain

perfection
perfection: n. perffeithrwydd

perfect
perfect: adj. perffaith, perfect: perffeithio

perforate
perforate: rhydyllu, perforate: tyllu

performance
performance: n. perfformiad

performer
performer: n. perfformiwr

performing
performing: adj. perfformiadol

perform
perform: perfformio

perfume
perfume: n. persawr, perfume: perarogli, perfume: persawrio, perfume: persawru

peril
peril: n. enbydrwydd

perimeter
perimeter: n. amfesur

perimetre
perimetre: n. perimedr

periodical
periodical: n. cyfnodolyn

periodic
periodic: adj. cyfnodol

period
period: n. cyfnod

peripheral
peripheral: n. perifferolyn, peripheral: adj. perifferol

perish
perish: trengi

permanent
permanent: adj. arhosol, permanent: adj. parhaol, permanent: adj. parhaol

permission
permission: n. caniatâd

permissive
permissive: adj. caniataol

permutation
permutation: n. trynewid

permute
permute: cyfrdroi

perpendicular
perpendicular: adj. perpendicwlar

perpetual
perpetual: adj. parhaus

perpetuate
perpetuate: bytholi, perpetuate: tragwyddoli

perplexing
perplexing: adj. dyrys

persecution
persecution: n. erledigaeth

persistent
persistent: adj. parhaol

persist
persist: dyfalbarhau

personaliser
personaliser: n. personoleiddydd

personality
personality: n. personoliaeth

personal
personal: adj. personol

personify
personify: personoli

personnel
personnel: n. personél

person
person: n. person

perspective
perspective: n. persbectif

perspire
perspire: chwysu

persuade
persuade: perswadio

persuasion
persuasion: n. perswâd

pervade
pervade: ymdreiddio

pervert
pervert: trawswyro

pessimism
pessimism: n. pesimistiaeth

pessimistic
pessimistic: adj. pesimistaidd

peter
Peter: n. Pedr

petition
petition: deisebu

petrify
petrify: caregu, petrify: maeneiddio

petrol
petrol: n. petrol

pharmaceutical
pharmaceutical: adj. fferyllol

pharmacist
pharmacist: n. fferyllwr

pharmacy
pharmacy: n. fferylliaeth, pharmacy: n. fferyllfa

phenomenon
phenomenon: n. ffenomen

philosophise
philosophise: athroniaethu, philosophise: athronyddu

philosophy
philosophy: n. athroniaeth

phone
phone: n. ffôn, phone: ffonio

phonetic
phonetic: adj. seinegol

phonetics
phonetics: n. seineg

phonological
phonological: adj. seinyddol

phonology
phonology: n. seinyddiaeth

phosphorus
phosphorus: n. ffosfforws

photocopy
photocopy: n. llungopi

photographer
photographer: n. ffotograffwr

photograph
photograph: n. ffotograff

photography
photography: n. ffotograffiaeth

photo
photo: n. ffoto

phrase
phrase: n. ymadrodd, phrase: brawddegu

phthisis
phthisis: n. darfodedigaeth

physical
physical: adj. corfforol, physical: adj. ffisegol

physiologist
physiologist: n. ffisiolegydd

physiotherapist
physiotherapist: n. ffisiotherapydd

physiotherapy
physiotherapy: n. ffisiotherapi

piano
piano: n. piano

picket
picket: picedu

pickle
pickle: cyffeithio, pickle: piclo

pictogram
pictogram: n. pictogram

picture
picture: n. darlun, picture: n. llun

piece of furniture
piece of furniture: n. dodrefnyn

piece
piece: n. darn

pierce
pierce: cethru, pierce: gwanu, pierce: trywanu

pierce to the heart
pierce to the heart: dwysbigo

pig
pig: n. mochyn

pile
pile: n. pentwr, pile: pentyrru, pile: tomennu

pile up
pile up: crugo, pile up: cyrnio

pilfer
pilfer: chwiwladrata

pillage
pillage: disbeinio

pilot
pilot: n. peilot

pinch
pinch: pinsio

pine away
pine away: ymgurio

ping
ping: n. ping

pink
pink: adj.sint. pinc

pin
pin: pinio

pinpoint
pinpoint: pinbwyntio

pint
pint: n. peint

pioneer
pioneer: arloesi

pipe
pipe: n. pibell

piss
piss: piso, piss: troethi

pitch
pitch: n. traw

pity
pity: pitïo, pity: tosturio, pity: trugarhau

pivot
pivot: n. colyn

pixel
pixel: n. picsel

pixmap
pixmap: n. picsfap

placeholder
placeholder: n. dalfan

place
place: n. man, place: n. lle, place: dodi, place: gosod

plague
plague: plagio

plain
plain: adj.sint. plaen

plaintiff
plaintiff: n. achwynydd

plait
plait: plethu

plane
plane: n. plân, plane: canwyro, plane: plaenio

planet
planet: n. planed

plan
plan: n. cynllun, plan: cynllunio

plan together
plan together: cydfwriadu

plant
plant: n. planhigyn, plant: plannu

plaster
plaster: plastro

plastic
plastic: n. plastig

plate
plate: haenellu

platform
platform: n. platfform

platinum
platinum: n. platinwm

player
player: n. chwaraeydd, player: n. chwaraewr, player: n. chwaraewr

play pipes
play pipes: pibyddio

play
play: chwarae

plead
plead: pledio

pleasant
pleasant: adj. pleserus

please
please: boddhau, please: plesio

pleasure
pleasure: n. bodd, pleasure: n. pleser

pleat
pleat: pletio

pledge
pledge: ardystio, pledge: arwystlo, pledge: gwystlo

plot
plot: n. plot, plot: plotio

plotter
plotter: n. plotydd

plough
plough: aradru, plough: aredig, plough: aredig

pluck feathers
pluck feathers: pluo

pluck
pluck: plicio, pluck: plufio, pluck: plycio

plugin
plugin: n. ategyn

plug
plug: n. plwg

plumb
plumb: plymio

plum
plum: n. eirinen

plunder
plunder: anrheithio, plunder: diffeithio, plunder: ysbeilio, plunder: ysglyfaethu

plural
plural: adj. lluosog

plus
plus: n. plws

poach
poach: herwhela, poach: mudferwi, poach: potsio

pocket
pocket: pocedu

podiatrist
podiatrist: n. podiatrydd

podiatry
podiatry: n. podiatreg

poem
poem: n. cerdd

poetics
poetics: n. barddas

poet
poet: n. bardd

poetry
poetry: n. barddoniaeth, poetry: n. prydyddiaeth

pointer
pointer: n. pwyntydd

point
point: n. pwynt, point: pwyntio

poison
poison: n. gwenwyn, poison: gwenwyno

poke
poke: procio

polarise
polarise: pegynu, polarise: polareiddio

polar
polar: adj. pegynol

police force
police force: n. heddlu

police
police: n. heddlu, police: plismona

policy
policy: n. polisi, policy: adj. polisïol

polished
polished: adj. graenus

polish
polish: cwyro, polish: sgleinio

political
political: adj. gwleidyddol

politician
politician: n. gwleidydd

politicise
politicise: gwleidyddoli

politics
politics: n. gwleidyddiaeth

pollen
pollen: n. paill

pollinate
pollinate: peillio

polluted
polluted: adj. llygredig

pollution
pollution: n. llygredd

polygamy
polygamy: n. amlwreiciaeth

polygon
polygon: n. polygon, polygon: n. polygon, polygon: n. amlochron

polyhedron
polyhedron: n. polyhedron

polyline
polyline: n. polylinell

polynomial
polynomial: adj. polynomaidd

polyomino
polyomino: n. polyomino

polytheism
polytheism: n. amldduwiaeth

ponder
ponder: synfyfyrio

pontificate
pontificate: doethinebu

ponytrek
ponytrek: merlota

pool
pool: n. pwll

poorly
poorly: adj. gwael

poor
poor: adj.sint. tlawd

pope
Pope: n. Pab

pop
pop: n. pop

popularise
popularise: poblogeiddio

popularity
popularity: n. poblogrwydd

popular
popular: adj. poblogaidd

populate
populate: poblogi

population
population: n. poblogaeth

pop-up menu
pop-up menu: n. naidlen

porridge
porridge: n. uwd

portable
portable: adj. cludadwy

portfolio
portfolio: n. portffolio

portion
portion: n. cyfran

port
port: n. cludiad, port: n. trosiad, port: n. porth

portray
portray: delweddu, portray: lluniadu, portray: portreadu

position
position: n. safle

positive
positive: adj. positif

possess in common
possess in common: cydfeddiannu

possession
possession: n. meddiant

possessive
possessive: adj. meddiannol

possess
possess: meddiannu, possess: perchenogi, possess: perchnogi

possibility
possibility: n. posibiliad, possibility: n. posibilrwydd

possible
possible: adj. posib, possible: adj. posibl

poster
poster: n. poster

postgraduate
postgraduate: n. ôl-raddedig, postgraduate: adj. ôl-raddedig

post-modern
post-modern: adj. ôl-fodern, post-modern: adj. ôl-fodern

postnatal
postnatal: adj. ôl-enedigol

post office
post office: n. llythrdy

postpone
postpone: gohirio

post
post: n. post, post: postio

post-registration
post-registration: adj. ôl-gofrestru

potato
potato: n. taten

potential
potential: n. potensial

pot
pot: n. pot

pound
pound: n. pwys, pound: n. punt, pound: n. punt, pound: dyrnod, pound: pwnio

pour
pour: arllwys, pour: goferu, pour: tywallt

powder
powder: powdro

powerful
powerful: adj. nerthol, powerful: adj. pwerus

power
power: n. pwer

practicality
practicality: n. ymarferoldeb

practical
practical: adj. ymarferol

practice
practice: n. practis, practice: ymarfer

practise a craft
practise a craft: crefftwra

practise idolatry
practise idolatry: delw-addoli

practitioner
practitioner: n. ymarferydd, practitioner: n. ymarferwr

pragmatism
pragmatism: n. pragmatiaeth

praise
praise: canmol, praise: clodfori, praise: moli, praise: moliannu

prance
prance: prancio

prattle
prattle: clebran, prattle: prepian

pray
pray: gweddïo, pray: paderu

preacher
preacher: n. pregethwr

preach
preach: pregethu

preannounce
preannounce: rhaghysbysu

precedent
precedent: n. cynsail

precede
precede: blaenori, precede: rhagflaenu

pre-chlorinate
pre-chlorinate: rhag-glorineiddio

precipitate
precipitate: gwaddodi, precipitate: gwaelodi

precision
precision: n. trachywiredd

precommand
precommand: n. rhagorchymyn

preconceived
preconceived: adj. rhagdybiedig

precondition
precondition: n. rhagamod

preconfiguration
preconfiguration: n. rhagffurfweddiad

predate
predate: rhagddyddio

predefined
predefined: adj. rhagddiffiniedig

predestination
predestination: n. rhagarfaethiad

predestine
predestine: rhagarfaethu

predetermined
predetermined: adj. rhagosodedig

predetermine
predetermine: rhagbenodi

predicament
predicament: n. helynt

prediction
prediction: n. rhagfynegiad

predict
predict: darogan, predict: daroganu, predict: rhagddweud, predict: rhagddywedyd

preface
preface: n. rhagymadrodd

preference
preference: n. hoffter

preferred
preferred: adj. hoff

prefix
prefix: n. rhagddodiad, prefix: arddodi, prefix: blaenddodi, prefix: rhagddodi

pregnancy
pregnancy: n. beichiogrwydd

pre-graded
pre-graded: adj. cyn-raddedig

prejudice
prejudice: n. rhagfarn

preloaded
preloaded: adj. rhaglwythedig

premeditate
premeditate: rhagfyfyrio

premium
premium: n. premiwm

prenatal
prenatal: adj. cynenedigol

preordain
preordain: rhagosod

prepare in advance
prepare in advance: rhagddarbodi

prepare oneself
prepare oneself: ymgyweirio

prepare
prepare: cyfarpar, prepare: cyfarparu, prepare: paratoi

preplan
preplan: rhag-gynllunio

preregister
preregister: cyn-gofrestru

presage
presage: rhagarwyddo

prescribe
prescribe: rhagnodi

presence
presence: n. gwydd, presence: n. presenoldeb

presentation
presentation: n. cyflwyniad

present
present: n. anrheg, present: adj. presennol, present: anrhegu, present: presenoli

presidency
presidency: n. arlywyddiaeth, presidency: n. llywyddiaeth

president
president: n. llywydd

preside
preside: llywyddu

presses
presses: n. gweisg

press
press: n. gwasg

pressure
pressure: n. pwysedd, pressure: n. gwasgedd

prestigious
prestigious: adj. anrhydeddus

presume
presume: rhagdybied, presume: rhagdybio

pretend
pretend: adj. ffug, pretend: cogio

prettify oneself
prettify oneself: ymdecáu

pretty
pretty: adj. pert, pretty: adj. tlws

prevention
prevention: n. ataliad

prevent
prevent: atal

preview
preview: n. rhagolwg

previous
previous: adj. blaenorol

price
price: n. pris, price: prisio

pricing
pricing: n. prisiad

prick
prick: pigo

pride oneself
pride oneself: ymfalchïo

pride
pride: n. balchder

priesthood
priesthood: n. offeiriadaeth

priest
priest: n. offeiriad

primary
primary: adj. cynradd

prime
prime: adj. cysefin

primer
primer: n. cyflwynlyfr

prince
prince: n. tywysog

principal
principal: n. prifswm, principal: adj. pennaf

principle
principle: n. egwyddor

printable
printable: adj. argraffadwy

printed
printed: adj. argraffedig

printer
printer: n. argraffydd, printer: n. argraffwr

print-on-demand
print-on-demand: adj. argraffu-ar-alw

print
print: n. print, print: argraffu, print: printio

priority
priority: adj. blaenoriaethol

prism
prism: n. prism

prisoner
prisoner: n. carcharor

prison
prison: n. carchar

privacy
privacy: n. preifatrwydd

private
private: adj. preifat

privatise
privatise: preifateiddio

privileged
privileged: adj. breintiedig

privilege
privilege: n. braint

prize
prize: n. gwobr

proactive
proactive: adj. rhagweithiol, proactive: adj. rhagweithredol

probability
probability: n. tebygolwrydd

probable
probable: adj. tebygol

probed
probed: adj. archwiliedig

problem
problem: n. problem, problem: n. ots

procedural
procedural: adj. trefniadol

procedure
procedure: n. gweithdrefn, procedure: n. trefniadaeth

processor
processor: n. prosesydd

process
process: n. proses, process: prosesu

produce
produce: cynhyrchu, produce: gweithgynhyrchu

producer
producer: n. cynhyrchwr, producer: n. cynhyrchydd

production
production: n. cynhyrchiad, production: n. cynhyrchiant

productive
productive: adj. cynhyrchiol

product
product: n. lluoswm, product: n. cynnyrch

professionalism
professionalism: n. proffesiynoldeb

professional
professional: n. proffesiynol, professional: adj. proffesiynol

profession
profession: n. proffesiwn

profess
profess: proffesu

profile
profile: n. proffil

profitable
profitable: adj. proffidiol

profiteer
profiteer: budrelwa

profit
profit: n. elw, profit: buddio, profit: buddioli, profit: elwa, profit: maelio, profit: proffidio

programme
programme: n. rhaglen, programme: rhaglennu

programmer
programmer: n. rhaglennwr

progressiveness
progressiveness: n. blaengaredd

progressive
progressive: adj. blaengar

progress
progress: n. cynnydd

prohibition
prohibition: n. gwaharddiad

project
project: n. project, project: n. prosiect, project: n. cywaith, project: bargodi, project: taflunio

proletariat
proletariat: n. gwrêng

prominence
prominence: n. amlygrwydd

promise
promise: n. addewid, promise: addo

promising
promising: adj. addawol

promote
promote: hybu

promoter
promoter: n. hyrwyddwr

promotion
promotion: n. hyrwyddiad

prompt
prompt: n. anogiad, prompt: cofweini

pronounce
pronounce: cynanu, pronounce: traethu, pronounce: yngan, pronounce: ynganu

proof
proof: n. proflen

propaganda
propaganda: n. propaganda

propagate
propagate: epilio

proper
proper: adj. priodol

property
property: n. priodwedd, property: n. eiddo

prophesy
prophesy: brudio, prophesy: dewinio, prophesy: proffwydo

proportional
proportional: adj. cyfrannol

proposal
proposal: n. cynnig

proprietary
proprietary: adj. perchnogol

prosecution
prosecution: n. erlyniad

proselytise
proselytise: cenhadu

prosody
prosody: n. mydryddiaeth

prospectus
prospectus: n. hysbyslen

prosperity
prosperity: n. ffyniant

prosperous
prosperous: adj. ffyniannus, prosperous: adj. llewyrchus

prosper
prosper: ffynnu

prosthetist
prosthetist: n. prosthetydd

prostitution
prostitution: n. puteindra

protected
protected: adj. gwarchodedig

protectionism
protectionism: n. diffyndollaeth

protection
protection: n. amddiffyniad, protection: n. diffyniad

protect
protect: diffryd, protect: diffyn, protect: diogelu, protect: gwarchod

protest
protest: gwrthdystio, protest: protestio

protocol
protocol: n. protocol

protractor
protractor: n. onglydd

protuberance
protuberance: n. chwydd

proud
proud: adj.sint. balch

provided
provided: adj. darparedig

provide
provide: darparu

provider
provider: n. darparydd, provider: n. darparwr

provisional
provisional: adj. darpariaethol

provoke
provoke: cythruddo, provoke: llidio

proxy
proxy: n. dirprwy, proxy: adj. dirprwyol

prpers
prpers: prn.subj.p1.mf.sg. prpers, prpers: prn.subj.p2.mf.sp. prpers, prpers: prn.subj.p2.mf.pl. prpers, prpers: prn.subj.p3.m.sg. prpers, prpers: prn.subj.p3.f.sg. prpers, prpers: prn.subj.p3.nt.sg. prpers, prpers: prn.subj.p1.mf.pl. prpers, prpers: prn.subj.p3.mf.pl. prpers, prpers: prn.obj.p1.mf.sg. prpers, prpers: prn.obj.p2.mf.sp. prpers, prpers: prn.obj.p2.mf.sp. prpers, prpers: prn.obj.p3.m.sg. prpers, prpers: prn.obj.p3.f.sg. prpers, prpers: prn.obj.p3.nt.sg. prpers, prpers: prn.obj.p1.mf.pl. prpers, prpers: prn.obj.p3.mf.pl. prpers

psalmody
psalmody: n. caniadaeth

psychiatric
psychiatric: adj. seiciatrig

psychiatrist
psychiatrist: n. seiciatrydd

psychiatry
psychiatry: n. seiciatreg

psychological
psychological: adj. seicolegol

psychologist
psychologist: n. seicolegwr

psychology
psychology: n. seicoleg

psychosurgery
psychosurgery: n. seicolawdriniaeth

publication
publication: n. cyhoeddiad

publications
publications: n. cyhoeddiadau

publicity
publicity: n. cyhoeddusrwydd, publicity: n. hysbysrwydd

public
public: n. cyhoedd, public: adj. cyhoeddus

published
published: adj. cyhoeddedig

publisher
publisher: n. cyhoeddwr

publish
publish: cyhoeddi

puff
puff: pwffian, puff: pwffio

pull through
pull through: bracso

pulp
pulp: pwlpio

pummel
pummel: ffustio, pummel: ffusto

pump
pump: pwmpio

punctuate
punctuate: atalnodi

punished
punished: adj. ymweledig

punishment
punishment: n. cosb

punish
punish: cosbi

pupil
pupil: n. disgybl

purchase jointly
purchase jointly: cydbwrcasu

purchase
purchase: n. pryniant, purchase: pwrcasu

purchasing
purchasing: adj. prynol

pure
pure: adj.sint. pur

purgatory
purgatory: n. purdan

purify
purify: coethi, purify: cwpelu, purify: pureiddio, purify: puro

puritanism
puritanism: n. piwritaniaeth

purpose
purpose: n. perwyl, purpose: n. pwrpas, purpose: n. diben

purse
purse: n. pwrs

pursue
pursue: erlid, pursue: erlyn, pursue: erlynu, pursue: ymlid, pursue: ymlyn, pursue: ymlynu

putative
putative: adj. tybiedig

put clay on
put clay on: cleilenwi, put clay on: cleio

put in a basket
put in a basket: basgedu

put into a vessel
put into a vessel: llestrio, put into a vessel: llestru

put on makeup
put on makeup: ymbincio

puzzle
puzzle: n. pos

pyramid
pyramid: n. pyramid

quadrangle
quadrangle: n. pedrongl

quadrant
quadrant: n. pedrant

quadrilateral
quadrilateral: n. pedrochr

quaff
quaff: cofftio, quaff: cwafftio, quaff: drachtio

qualification
qualification: n. cymhwyster

qualified
qualified: adj. cymwysedig

qualitative
qualitative: adj. ansoddol

quality
quality: n. ansawdd

quango
quango: n. cwango

quantify
quantify: meintoli

quantitative
quantitative: adj. meintiol

quarantine
quarantine: n. cwarant

quarrel
quarrel: cecru, quarrel: cweryla, quarrel: cynhenna, quarrel: cynhennu, quarrel: ffraeo, quarrel: ymdaeru, quarrel: ymdderian, quarrel: ymdderu, quarrel: ymgecru

quarterly
quarterly: adj. chwarterol

quarter
quarter: n. chwarter, quarter: chwarterio, quarter: chwarteru

quart
quart: n. chwart, quart: n. cwart

quay
quay: n. cei

query
query: n. gofyniad, query: n. ymholiad

question-mark
question-mark: n. gofynnod

questionnaire
questionnaire: n. holiadur

question
question: n. cwestiwn, question: cwestiynu

questions
questions: n. cwestiynau

queue
queue: n. ciw, queue: ciwio

quiet
quiet: n. tawelwch, quiet: adj. tawel

quiz
quiz: n. cwis

quota
quota: n. cwota, quota: n. cwota

quotation mark
quotation mark: n. dyfynnod

quotation
quotation: n. dyfyniad

quoted
quoted: adj. dyfynedig

quote
quote: dyfynnu, quote: dyfynodi

rabbit
rabbit: n. cwningen

rabies
rabies: n. cynddaredd

race
race: rasio

racial
racial: adj. hiliol

racism
racism: n. hiliaeth

radiance
radiance: n. llewyrch

radian
radian: n. radian

radiate
radiate: pelydru, radiate: rheiddiadu, radiate: rheiddio

radiographer
radiographer: n. radiograffydd, radiographer: n. radiograffwr

radiography
radiography: n. radiograffeg

radio
radio: n. radio

radius
radius: n. radiws

rage
rage: ffromi, rage: ymffyrnigo

rail
rail: carfanu

railway
railway: n. rheilffordd

rain
rain: n. glaw

raise jointly
raise jointly: cydfagu

raise
raise: dyrchafael, raise: dyrchafu

rake
rake: cribinio, rake: rhacanu

rally
rally: n. rali

ram
ram: hwpio, ram: hwpo, ram: hyrddio, ram: hyrddu

random access
random access: hapgyrchu

random choice
random choice: n. hap-ddewis

random number
random number: n. haprif

range
range: n. amrediad, range: n. rhychwant, range: n. ystod

rank
rank: n. rheng

rant
rant: prygowtha

rape
rape: n. trais, rape: treisio

rapidity
rapidity: n. chwyrndra

rate
rate: n. cyfradd

rationalism
rationalism: n. rhesymoliaeth

ration
ration: dogni

ratio
ratio: n. cymhareb

ravish
ravish: gordderchu

raw
raw: adj.sint. amrwd, raw: adj.sint. crai, raw: adj.sint. crau

ray
ray: n. pelydryn

reaccept
reaccept: aildderbyn

reaccustom oneself
reaccustom oneself: ailgynefino

reach
reach: estyn

reaction
reaction: n. adwaith

react
react: adweithio, react: gwrthweithio

readability
readability: n. darllenadwyaeth

readable
readable: adj. darllenadwy

reader
reader: n. darllenydd, reader: n. darllenwr

readiness
readiness: n. parodrwydd

reading
reading: n. darlleniad

re-administer
re-administer: adweinyddu

read
read: adj. darllenedig, read: darllen

ready
ready: adj. parod

realisation
realisation: n. sylweddoliad

realiseable
realiseable: adj. sylweddadwy

realise
realise: sylweddoli

realistic
realistic: adj. realistig

reality
reality: n. realiti

real
real: adj. gwirioneddol

realtime
realtime: adj. amser-real

reanalyse
reanalyse: ailddosrannu

reanimate
reanimate: adfywhau, reanimate: ailfywiogi

reap by hand
reap by hand: bawdfedi

reappear
reappear: ailymddangos

reapply
reapply: ailymgeisio

reappoint
reappoint: ailbenodi

reap
reap: medi

re-arise
re-arise: ailgyfodi

rearm
rearm: adarfogi, rearm: ailarfogi

rearrange
rearrange: aildrefnu

rear
rear: adj. ôl, rear: maethu, rear: magu

reasonable
reasonable: adj. rhesymol

reason
reason: n. rheswm, reason: rhesymu, reason: ymresymu

reassemble
reassemble: ailgynnull

reassess
reassess: ailasesu

reattack
reattack: ailymosod

rebaptise
rebaptise: ailfedyddio

re-beget
re-beget: ailgenhedlu

rebel
rebel: gwrthryfela

rebound
rebound: adlamu

rebroadcast
rebroadcast: ailddarlledu

rebuild
rebuild: ailadeiladu

rebuke
rebuke: ymsennu

recant
recant: datgyffesu

recede
recede: gwrthgilio, recede: pellhau, recede: ymbellhau

receipt
receipt: n. derbynneb, receipt: n. derbynneb

received
received: adj. derbyniedig

receive
receive: derbyn, receive: derbynio

receiver
receiver: n. derbynnydd, receiver: n. derbyniwr, receiver: n. derbyniwr

recent
recent: adj. diweddar

reception
reception: n. derbyniad

rechannel
rechannel: ailsianelu

recheck
recheck: ailwirio

recipient
recipient: n. derbyniwr

recirculate
recirculate: ail-ledaenu

recitative
recitative: n. adroddgan

recite
recite: adrodd

recite together
recite together: cydadrodd

recklessness
recklessness: n. byrbwylltra

reckon
reckon: clandrio

recline
recline: lledorwedd, recline: lled-orwedd

recognised
recognised: adj. adnabyddedig, recognised: adj. cydnabyddedig

recognition
recognition: n. adnabyddiad, recognition: n. adnabyddiaeth, recognition: n. cydnabyddiaeth

recoil
recoil: gwrthneidio

recollect
recollect: ailgasglu

recolonise
recolonise: ailwladychu

recommendation
recommendation: n. argymhelliad

recommended
recommended: adj. argymelledig

recommend
recommend: argymell

recommit oneself
recommit oneself: ailymrwymo

recompose
recompose: ailgyfansoddi, recompose: ailgysodi

reconcile again
reconcile again: ailgymodi

reconcile
reconcile: cymodi, reconcile: cysoni

reconciliation
reconciliation: n. cymod

recondition
recondition: atgyflyru

reconnect
reconnect: ailgysylltu

reconnoitre
reconnoitre: rhagchwilio

reconquer
reconquer: ailgoncro

reconsecrate
reconsecrate: ailgysegru

reconsider
reconsider: ailystyried

reconvene
reconvene: ailymgynull

record
record: n. cofnod, record: n. cofnod, record: n. record, record: cofnodi, record: recordio

records
records: n. recordiau

recorrect
recorrect: ailgywiro

recover health
recover health: atgryfhau

recover
recover: adennill

recovery
recovery: n. adferiad

recreate
recreate: ailgreu

rectangle
rectangle: n. petryal

rectangular
rectangular: adj. petryal

rectum
rectum: n. rhefr

recurring
recurring: adj. cylchol

recursive
recursive: adj. dychweliadol

recycleable
recycleable: adj. ailgylchadwy

recycle
recycle: ailgylchu, recycle: ailgylchynu

redecorate
redecorate: ailaddurno

redeem
redeem: ymwaredu

redefine
redefine: ailddiffinio

redemption
redemption: n. adbryniad

redevelop
redevelop: ailddatblygu

redirection
redirection: n. ailgyfeiriad

redirect
redirect: arallgyfeirio

redistribute
redistribute: ailrannu

redouble
redouble: ailddyblu

redraft
redraft: ailddrafftio

redraw
redraw: ail-lunio

red
red: adj. coch

reduction
reduction: n. gostyngiad

redundant
redundant: adj. afraid

re-elect
re-elect: adethol

re-enfranchise
re-enfranchise: ailfreinio

re-enter
re-enter: adfewnio

re-erect
re-erect: ailgodi

reestablish
reestablish: ailsefydlu

reestimate
reestimate: ailgloriannu

reexperience
reexperience: ailbrofi

referee
referee: n. dyfarnwr

reference
reference: n. cyfeirnod, reference: n. cyfeirnod, reference: cyfeirnodi

referendum
referendum: n. refferendwm

reflection
reflection: n. adlewyrchiad

reflect
reflect: adlewyrchu

reflexology
reflexology: n. adweitheg

reflux
reflux: adlifo

reformat
reformat: ailfformatio

reformed
reformed: adj. diwygiedig

reform
reform: n. diwygiad, reform: diwygio

refrain
refrain: ymatal, refrain: ymgadw

refresh
refresh: dadflino, refresh: ireiddio

refrigerate
refrigerate: rheweiddio

refrigerator
refrigerator: n. oergell

refugee
refugee: n. ffoadur

refuge
refuge: n. lloches, refuge: n. noddfa

refurnish
refurnish: ailddodrefnu

refuse
refuse: gwrthod, refuse: nacáu, refuse: pallu

regional
regional: adj. ardal, regional: adj. rhanbarthol

region
region: n. ardal, region: n. bro

registered
registered: adj. cofrestredig

register oneself
register oneself: ymgofrestru

register
register: n. cofrestr, register: cofrestru

registrar
registrar: n. cofrestrwr

registration
registration: n. cofrestriad

regrade
regrade: ailraddio

regress
regress: atchwelyd

regretful
regretful: adj. edifar

regrow
regrow: aildyfu, regrow: atyfu

regularity
regularity: n. cysondeb

regular
regular: adj. rheolaidd

regulated
regulated: adj. rheoledig

regulate
regulate: rheoleiddio

regulation
regulation: n. rheoliad

regulator
regulator: n. rheoleiddiwr

regulatory
regulatory: adj. rheoliadol

rehire
rehire: ailgyflogi

reign
reign: teyrnasu

reinflate
reinflate: adchwyddo, reinflate: ailchwyddo

reinforce
reinforce: cyfnerthu

reingest
reingest: ailfwyta

reinsure
reinsure: ailyswirio

reintegrate
reintegrate: atgyfannu

reintroduce
reintroduce: ailgyflwyno

reinvent
reinvent: ailddyfeisio

reinvest
reinvest: ailfuddsoddi

rejoice jointly
rejoice jointly: cydlawenhau

rejoice
rejoice: llawenhau, rejoice: llawenychu, rejoice: ymlawenhau, rejoice: ymlawenychu

rejoin
rejoin: ailymaelodi, rejoin: ailymuno

rejuvenate
rejuvenate: iengeiddio

relation
relation: n. perthynas

relative
relative: n. perthynas, relative: adj. perthynol

relaunch
relaunch: ail-lansio

relaxation
relaxation: n. ymollyngdod

relax
relax: ymlacio

relay
relay: n. relái

relearn
relearn: ailddysgu

release
release: n. gollyngiad, release: n. rhyddhad, release: gollwng, release: rhyddhau

relevance
relevance: n. perthnasedd

relevant
relevant: adj. perthnasol

reliability
reliability: n. dibynnedd

reliable
reliable: adj. dibynadwy

relief
relief: n. tirwedd

religion
religion: n. crefydd

religiousness
religiousness: n. crefyddolder

religious
religious: adj. crefyddol

relist
relist: ailrestru

relocate
relocate: adleoli

reluctance
reluctance: n. cyndynrwydd

reluctant
reluctant: adj. anfoddog

remainder
remainder: n. gweddill

remain
remain: gweddillio

remains
remains: n. gwarged

remarkable
remarkable: adj. hynod

remarry
remarry: ailbriodi

remedy
remedy: mendio

remember
remember: cofio

reminder
reminder: n. atgof

remind
remind: atgoffa, remind: atgoffáu

reminiscent
reminiscent: adj. atgoffaol

remnant
remnant: n. gweddill

remote
remote: adj. anghysbell

removable
removable: adj. symudadwy

remove entirely
remove entirely: cyfrddwyn

remove
remove: gwaredu

remover
remover: n. symudwr

remove stones
remove stones: digaregu

renaissance
renaissance: n. dadeni

renderer
renderer: n. llunydd

rend
rend: cynhinio

renewable
renewable: adj. adnewyddadwy

renewal
renewal: n. adnewyddiad

renew
renew: adnewyddu, renew: newyddu

renounce
renounce: diofryd, renounce: diofrydu, renounce: ymwadu

renown
renown: n. bri, renown: n. clod

rent
rent: n. rhent, rent: rhentio, rent: rhentu

renunciation
renunciation: n. ymwrthodiad

reoffence
reoffence: n. aildrosedd

reoffend
reoffend: aildroseddu

re-offer
re-offer: ailgynnig

reorganise
reorganise: ad-drefnu

repack
repack: ailbacio

repaint
repaint: ailbeintio

repair
repair: n. atgyweiriad, repair: atgyweirio

repayment
repayment: n. ad-daliad

repay
repay: ad-dalu

repeater
repeater: n. ailadroddydd

repeat
repeat: ailadrodd, repeat: ailddweud

repel
repel: cilgwthio

repent
repent: edifarhau, repent: edifaru, repent: edifeirio

repetition
repetition: n. ailadroddiad

replacement
replacement: n. amnewidiad

replace
replace: amnewid

replan
replan: ailgynllunio

replant
replant: ailblannu

replay
replay: ailchwarae

replenish
replenish: atgyfnerthu

replicated
replicated: adj. dyblygedig

replication
replication: n. dyblygiad

reply
reply: n. ateb

repopulate
repopulate: ailboblogi

report
report: n. adroddiad

repossess
repossess: ailfeddiannu

representational
representational: adj. cynrychioliadol

representation
representation: n. cynrychiolaeth, representation: n. cynrychioliad

representative
representative: n. cynrychiolydd, representative: n. cynrychiolwr, representative: adj. cynrychiadol

represent
represent: cynrychioli

reprint
reprint: n. ailargraffiad, reprint: adargraffu, reprint: ailargraffu

reproach
reproach: cwlio

reproduce
reproduce: atgynhyrchu

reprofile
reprofile: ailbroffilio

reprove
reprove: ymliwio

republish
republish: ailgyhoeddi

repulsion
repulsion: n. gwrthnysedd

requarry
requarry: ailgloddio

requested
requested: adj. ceisiedig

request
request: n. cais, request: erchi

requirement
requirement: n. anghenrhaid

reread
reread: ailddarllen

re-refer
re-refer: ailgyfeirio

re-revise
re-revise: ailddiwygio

rerun
rerun: dadredeg

rescue
rescue: n. achubiad

researcher
researcher: n. ymchwilydd, researcher: n. ymchwiliwr

research
research: n.unc. ymchwil

reselect
reselect: ailddewis

resell
resell: ailwerthu

resemble each other
resemble each other: ymgyffelybu

resemble
resemble: ymdebygu

reserved
reserved: adj. neilltuedig

reset
reset: n. ailosodiad, reset: ailgyweirio, reset: ailosod

reshoulder
reshoulder: ailysgwyddo

reside
reside: bucheddu, reside: preswylio

residue
residue: n. gwarged

resign
resign: ymddiswyddo

resistance
resistance: n. gwrthiant

resolution
resolution: n. adduned, resolution: n. cydraniad

resolve
resolve: talmu

resolver
resolver: n. cydrannydd

resound
resound: adleisio, resound: atseinio, resound: diasbedain, resound: seinio

resource
resource: n. adnodd, resource: adnoddu

respectability
respectability: n. parchusrwydd

respect
respect: n. parch, respect: parchu

respondent
respondent: n. ymatebydd, respondent: n. ymatebwr

respondents
respondents: n. ymatebwyr

respond
respond: ymateb

response
response: n. ymateb

responsibility
responsibility: n. cyfrifoldeb

responsible
responsible: adj. cyfrifol

responsiveness
responsiveness: n. ymatebolrwydd

responsive
responsive: adj. ymatebol

re-sprout
re-sprout: ailflagura

restart
restart: ailddechrau

restate
restate: ailddatgan, restate: ailddatganu

rest at night
rest at night: noswylio

restoration
restoration: n. adferiad

restore
restore: adfer, restore: adferu, restore: dadroddi, restore: edfryd

rest
rest: n. gorffwys, rest: n. saib, rest: diluddedu, rest: gorffwyso

restriction
restriction: n. cyfyngiad

restructure
restructure: ailstrwythuro

resulting
resulting: adj. canlyniadol

result
result: n. canlyniad

resurrect
resurrect: atgyfodi

resuscitate
resuscitate: adfywio, resuscitate: dadlewygu

retailer
retailer: n. manwerthwr

retail
retail: adj. manwerth, retail: mân-werthu

retarget
retarget: aildargedu

retell
retell: ailfynegi

rethink
rethink: ailfeddwl

retirement
retirement: n. ymddeoliad

retire
retire: ymddeol

retraining
retraining: n. ailhyfforddiant

retrain
retrain: ailhyfforddi

retreat
retreat: cilio, retreat: encil, retreat: encilio, retreat: ymgilio

retrieve
retrieve: adalw

return
return: n. dychweliad, return: dychwelyd

retype
retype: aildeipio

reunite
reunite: aduno

reuse
reuse: ailddefnyddio

reveal
reveal: amlygu, reveal: dadlennu, reveal: dadorchuddio, reveal: datgelu

revelation
revelation: n. datguddiad

revenue
revenue: n. cyllid, revenue: n. refeniw

reverberate
reverberate: datseinio

reverend
reverend: adj. parchedig

reverie
reverie: n. synfyfyrdod

reverse
reverse: adj. gwrthdroedig, reverse: gwrthdroi

review
review: n. adolygiad, review: adolygu

reviews
reviews: n. adolygiadau

revile
revile: difenwi

revive
revive: dadebru

revivify
revivify: ailfywhau

revolution
revolution: n. chwildroad, revolution: n. chwyldro

revolve
revolve: chwyldroi, revolve: sidellu, revolve: sidyllio

reward
reward: gwobrwyo

rewind
rewind: ailddirwyn

re-win
re-win: ailennill

rewire
rewire: ailweirio

rework
rework: ailwampio

rewrite
rewrite: n. ailysgrifeniad

rhombus
rhombus: n. rhombws

rhubarb
rhubarb: n. rhiwbob

rhyme
rhyme: n. odl, rhyme: odli, rhyme: rhigymu

rhyme with
rhyme with: cyfodli

rice
rice: n. reis

riddle
riddle: n. rhidyll

ride as passenger
ride as passenger: isgilio

ride
ride: marchocáu, ride: marchogaeth, ride: reidio

right
right: n. de, right: n. hawl

rigid
rigid: adj. anhyblyg

ring
ring: n. modrwy, ring: modrwyo

rise
rise: cwnnu, rise: ymgodi

risk
risk: n. risg

ritualism
ritualism: n. defodaeth

river
river: n. afon

rivet
rivet: hymynnu, rivet: lletemu, rivet: rhybedio, rivet: rhybedu

road
road: n. ffordd

roar
roar: rhuo

roast
roast: rhostio

robin
robin: n. coch-gam

rob
rob: lladrata

rod
rod: n. rhoden

role
role: n. rôl

rollerskate
rollerskate: sglefrholio

roll
roll: n. rhôl, roll: rholian, roll: rholio, roll: rowlio, roll: treiglio

roman
Roman: adj. Rhufeinig

romanticise
romanticise: rhamantu

romp
romp: rhampio

roof
roof: n. to, roof: toi

room
room: n. stafell, room: n. ystafell

roost
roost: clwydo

root
root: n. isradd, root: n. gwreiddyn, root: gwreiddio

rope
rope: rhaffo, rope: rhaffu

rotate
rotate: cylchdroi

rotation
rotation: n. cylchdro

rot
rot: pydru

rotten
rotten: adj. pwdr

roughen
roughen: garwhau

rough-hew
rough-hew: brasnaddu

rough
rough: adj.sint. bras, rough: adj.sint. garw

roundabout
roundabout: n. cylchfan, roundabout: n. cylchfan

rounding
rounding: n. talgryniad

round
round: n. rownd, round: adj.sint. cron, round: adj.sint. crwn

round up
round up: talgrynnu

routine
routine: n. rheolwaith

row
row: n. rhes, row: rhwyfo

royal
royal: adj. brenhinol

rubber
rubber: n. rwber

rubbish
rubbish: n. sbwriel

rubble
rubble: n. rwbel

rub
rub: rhwbio

rudeness
rudeness: n. anfoesgarwch

rugby
rugby: n. rygbi

ruin
ruin: n. adfail, ruin: difetha, ruin: difethu

ruins
ruins: n. adfeilion

rule
rule: n. rheol

ruminate
ruminate: cilgnoi

rumour
rumour: n. si, rumour: n. sibrwd, rumour: n. sôn

run a message
run a message: negesa

runlevel
runlevel: n. rhedlefel

running
running: adj. rhedegol

run
run: n. rhediad, run: rhedeg

rural
rural: adj. gwledig

rush
rush: cythru, rush: rhuthro

russian
Russian: n. Rwseg, Russian: adj. Rwsiaidd

russia
Russia: n. Rwsia

rustle
rustle: siffrwd

rust
rust: rhwdu, rust: rhydu

rye
rye: n. rhyg

sack
sack: n. sach, sack: sacio, sack: seco

sacrifice
sacrifice: n. aberth, sacrifice: aberthu, sacrifice: offrymu

sacrilege
sacrilege: n. cysegr-ladrad

sadden
sadden: pruddhau, sadden: tristáu

saddle
saddle: cyfrwyo

sad
sad: adj. trist

safeguard
safeguard: n. amddiffyniad, safeguard: n. diogelwch

safe
safe: adj.sint. dihangol, safe: adj.sint. diogel

safety
safety: n. diogelwch

sage
sage: n. saets

sailboard
sailboard: hwylfyrddio

sail
sail: hwylio, sail: mordwyo, sail: morio

saint
saint: n. sant

sake
sake: n. mwyn

saleable
saleable: adj. gwerthadwy

sale
sale: n. sêl, sale: n. gwerthiant

salmon
salmon: n. eog

salt
salt: n. halen, salt: halltu

salty
salty: adj. hallt

salutation
salutation: n. cyfarchiad

sample
sample: n. sampl, sample: samplo, sample: samplu

sanctify
sanctify: nefoli, sanctify: sancteiddio, sanctify: teilynghau

sanction
sanction: n. sancsiwn

sand
sand: n. tywod

sandstone
sandstone: n. tywodfaen

sane
sane: adj. call

sanity
sanity: n. callineb

sapphire
sapphire: n. saffir

satellite
satellite: n. lloeren

satirise
satirise: goganu, satirise: gwrthganu

satisfaction
satisfaction: n. boddhad

satisfactory
satisfactory: adj. boddhaol, satisfactory: adj. boddhaus

satisfy
satisfy: bodloni, satisfy: dianghenu, satisfy: diwallu

saturated
saturated: adj. dirlawn

saturate
saturate: trwytho

saturation
saturation: n. dirlawnder

saturday
Saturday: n. Dydd Sadwrn

saturn
Saturn: n. Sadwrn

saunter
saunter: rhodio

saved
saved: adj. cadwedig, saved: adj. cadwedig

save
save: achub, save: arbed, save: cynilo, save: safio

saviour
saviour: n. ceidwad

savour
savour: archwaethu, savour: chwaethu

saw
saw: n. llif, saw: llifio

saying
saying: n. dywediad

say
say: dweud, say: dywedyd, say: medd

sbondonics
Sbondonics: n. Sbondonics

sbri-di-ri
Sbri-di-ri: n. Sbri-di-ri

scald
scald: sgaldian, scald: sgaldio, scald: ysgaldanu, scald: ysgaldian

scalene
scalene: adj. anghyfochrog

scale
scale: n. graddfa

scales
scales: n. tafol

scanner
scanner: n. sganiwr

scan
scan: arsyllu, scan: corfannu, scan: sganio

scarce
scarce: adj. prin

scarcity
scarcity: n. prinder

scar
scar: creithio

scattered
scattered: adj. gwasgaredig

scatter
scatter: chwalu, scatter: gwasgaru

scene
scene: n. golygfa

scheduled
scheduled: adj. trefnlenedig

scheduler
scheduler: n. trefnlennydd

schedule
schedule: n. trefnlen

scheme
scheme: cynllwynio

scholar
scholar: n. ysgolhaig

scholarship
scholarship: n. ysgoloriaeth, scholarship: n. ysgolheictod

school
school: n. ysgol

science
science: n. gwyddor, science: n. gwyddoniaeth

scientific
scientific: adj. gwyddonol

scientist
scientist: n. gwyddonydd

scold
scold: ceryddu, scold: dwrdio

scope
scope: n. cwmpas, scope: n. sgôp

scorch
scorch: rhuddo

score
score: n. sgôr, score: sgori, score: sgorio

scots gaelic
Scots Gaelic: n. Gaeleg

scourge
scourge: fflangellu, scourge: ffrewyllio, scourge: ffrewyllu

scour
scour: sgwrio, scour: ysgwrio

scowl
scowl: cilwgu, scowl: cuchio, scowl: diraenu, scowl: talgrychu

scramble
scramble: sgrialu

scrape
scrape: sgrafellu, scrape: sgrapio

scrap iron
scrap iron: n. haearnach

scrap
scrap: n. sgrap

scratch
scratch: crafu, scratch: ymgripio, scratch: ysgraffinio

scream
scream: gwawchio, scream: sgrechain, scream: sgrechian, scream: sgrechio

screen
screen: n. sgrin, screen: sgrinio

screenshot
screenshot: n. sgrinlun

screw
screw: sgriwio

scribble
scribble: sgriblan, scribble: sgriblian, scribble: sgriblo

script
script: n. sgript

scroller
scroller: n. sgrolydd

scrotum
scrotum: n. sgrotwm

scrub
scrub: sgrwbio

sculpt
sculpt: cerflunio

seal
seal: n. sêl, seal: selio

seam
seam: gwrymio

searchable
searchable: adj. chwiliadwy

search
search: n. chwiliad, search: chwilio, search: chwilmanta, search: chwilota

sear
sear: serio

sea
sea: n. môr

season
season: n. tymor

seat
seat: n. sedd

seaweed
seaweed: n. gwymon

secondary
secondary: adj. eilaidd, secondary: adj. eilradd

second
second: n. eiliad, second: adj. ail, second: eilio, second: secondio

secretary
secretary: n. ysgrifennydd

secrete
secrete: secretu

secret
secret: n. cyfrinach

section
section: n. adran

sections
sections: n. adrannau

sector
sector: n. sector, sector: n. sectorau

sect
sect: n. enwad

security
security: n. arwystl

seduce
seduce: ehudo

seed
seed: hadu

seek a wife
seek a wife: gwreica

seek
seek: argeisio, seek: ceisio, seek: ymgeisio, seek: ymofyn

see
see: gweld

segment
segment: n. segment

segregate
segregate: didol, segregate: didoli

selected
selected: adj. detholedig, selected: adj. dewisiedig

selection
selection: n. detholiad

selective
selective: adj. detholiadol

select
select: adj. detholus, select: dethol

self-assess
self-assess: hunanasesu

self-employed
self-employed: adj. hunangyflogedig

self-examine
self-examine: hunanholi

self-inflicted
self-inflicted: adj. hunanachosedig

self-regard
self-regard: hunangyfeirio

self-respect
self-respect: n. hunanbarch

self-satisfied
self-satisfied: adj. hunanfoddhaus

self-select
self-select: hunanddewis

self-sustaining
self-sustaining: adj. hunangynhaliol

sell books
sell books: llyfrwerthu

seller
seller: n. gwerthwr

sell
sell: gwerthu

semi-automatic
semi-automatic: adj. hanner-awtomatig

semicolon
semicolon: n. gwahannod

seminar
seminar: n. seminar

sender
sender: n. anfonwr

send
send: anfon

sensation
sensation: n. ymdeimlad

sense of hearing
sense of hearing: n. clyw

sense
sense: n. synnwyr, sense: synhwyro, sense: ymglywed

sensible
sensible: adj. synhwyrol

sensitive
sensitive: adj. sensitif, sensitive: adj. tringar

sensitivity
sensitivity: n. sensitifrwydd

sensor
sensor: n. synhwyrydd

sentence
sentence: n. brawddeg, sentence: dedfrydu

sentinel
sentinel: n. gwyliedydd

sent
sent: adj. anfonedig

separate
separate: adj. gwahân, separate: daduno, separate: diasgellu, separate: gwahanu, separate: parthu

separator
separator: n. gwahanydd

septagon
septagon: n. septagon

september
September: n. Medi

sequencer
sequencer: n. dilyniannydd

sequence
sequence: n. dilyniant

sequential
sequential: adj. dilyniannol

sequester
sequester: atafaelu

serenity
serenity: n. areulder

serialisation
serialisation: n. cyfresoliad

serial
serial: adj. cyfresol

series
series: n. cyfres

serious
serious: adj. difrif, serious: adj. difrifol

servant
servant: n. gwas

server
server: n. gweinydd

serve
serve: gwasanaethu, serve: gweinyddu, serve: serfio

serve wine
serve wine: trullio

service
service: n. gwasanaeth

session
session: n. sesiwn

set in order
set in order: cyweirio

set on
set on: hysian

set
set: n. set, set: machlud

set square
set square: n. sgwaryn

setting
setting: n. gosodiad

settle in a parish
settle in a parish: plwyfo

settlement
settlement: n. setliad, settlement: n. ardrefniant, settlement: n. anheddiad

settle
settle: setlo, settle: ymsefydlu

seven
seven: adj. saith

seventh
seventh: adj. seithfed

severity
severity: n. difrifoldeb, severity: n. llymder

sewerage
sewerage: n. carthffosiaeth

sew
sew: gwnïo

sew with large stitches
sew with large stitches: brasbwythu

sex
sex: n. rhyw

sexual
sexual: adj. rhywiol

shackle
shackle: gefynnu

shade
shade: n. arlliw

shading
shading: n. graddliw

shadow
shadow: n. cysgod

shake
shake: ysgwyd, shake: ysgydwo, shake: ysgytio

shallow
shallow: adj. bas

shame
shame: cywilyddio, shame: gwaradwyddo

shaped
shaped: adj. ffurfiedig

shape
shape: n. siâp, shape: siapio, shape: siapo

shared
shared: adj. rhanedig

share
share: n. cyfranddaliad, share: rhannu, share: siario

share the use of
share the use of: cyd-ddefnyddio

sharpen
sharpen: awchlymu, sharpen: blaenllymu, sharpen: llymhau

sharpness
sharpness: n. llymder

sharp
sharp: adj. llem, sharp: adj. llym

shatter
shatter: dryllio, shatter: talchu, shatter: ysgyrioni

shave
shave: eillio, shave: siafio, shave: siafo

shear
shear: cneifio, shear: llafnu

sheep
sheep: n. dafad

sheet
sheet: n. dalen, sheet: n. llen

shelf
shelf: n. silff

shell
shell: n. plisgyn, shell: n. cragen, shell: masglu, shell: plisgo, shell: silio

shelter
shelter: cysgodi, shelter: llochesu

shepherd
shepherd: bugeilio

shield
shield: n. tarian

shift
shift: syflu, shift: syflyd

shine
shine: caboli, shine: disgleirio, shine: tywynnu

ship's compass
ship's compass: n. cwmpawd

ship
ship: n. llong

shit
shit: cachu

shiver
shiver: crynu, shiver: rhynnu, shiver: ysgrytio

shock
shock: n. sioc

shoe
shoe: n. esgid, shoe: pedoli

shoot
shoot: saethu

shopper
shopper: n. siopwr

shop
shop: n. siop, shop: siopa

shore
shore: n. glan

shortcut
shortcut: n. byrlwybr

shorten
shorten: byrhau, shorten: cwtanu, shorten: cwtáu, shorten: cwtogi

shorthand
shorthand: n. llaw-fer

short-lived
short-lived: adj. byrhoedlog

shortness
shortness: n. byrder

short notice
short notice: adj. byr-rybudd

short
short: adj.sint. cwta, short: adj. fer, short: adj. byr

short-term
short-term: adj. tymor-byr

shot
shot: n. saethiad

shoulder
shoulder: n. ysgwydd, shoulder: ysgwyddo

shout
shout: bloeddio, shout: crochweiddi, shout: gweiddi

shove
shove: n. ysgwd, shove: gwthio

shower
shower: cawodi

show
show: n. sioe, show: dangos

shred
shred: cigweinio

shrivel
shrivel: crebachu, shrivel: gwystno, shrivel: swbachu, shrivel: sybachu

shroud
shroud: amwisgo

shy
shy: rhusio

sicken
sicken: clafeiddio, sicken: clafychu

side-effect
side-effect: n. sgileffaith, side-effect: n. sgil-effaith

side
side: n. ochr, side: n. tu

side-step
side-step: ochrgamu

side view
side view: n. ochr-olwg

siege
siege: n. gwarchae

sieve
sieve: n. gogr

sift
sift: gogru, sift: gogrwn, sift: nithio, sift: rhidyllio, sift: rhidyllu, sift: rhuchio

sigh
sigh: ochneidio

signature
signature: n. llofnod

signer
signer: n. llofnodwr

significance
significance: n. arwyddocâd

significant
significant: adj. arwyddocaol, significant: adj. ystyrlon

signify
signify: arwyddocáu

sign
sign: n. arwydd, sign: arwyddo, sign: llofnodi

silage
silage: n. silwair

silence
silence: n. distawrwydd, silence: distewi, silence: mudo, silence: tawelu

silent
silent: adj. distaw

silk
silk: n. sidan

silver
silver: n. arian

similarity
similarity: n. cyflunedd, similarity: n. tebygrwydd

similar
similar: adj. cyffelyb, similar: adj. cyflun, similar: adj. tebyg

simmer
simmer: ffrwtian, simmer: goferwi, simmer: iasu, simmer: lledferwi

simper
simper: glaswenu

simple
simple: adj.sint. syml

simpleton
simpleton: n. gwirionyn

simplicity
simplicity: n. symlrwydd

simplify
simplify: symleiddio

simulate
simulate: efelychu

since
since: adj. ers

sine
sine: n. sin

singe
singe: darlosgi

single
single: adj. sengl

sing
sing: canu

sing together
sing together: cydganu

singular
singular: adj. unigol

sink oneself
sink oneself: ymsuddo

sink
sink: soddi, sink: suddo, sink: ymanodi

sin
sin: n. pechod, sin: pechu

sip
sip: llymeidio, sip: llymeitian, sip: llymeitio, sip: sipian, sip: sipio

sir
sir: n. syr

sister
sister: n. chwaer

sit jointly
sit jointly: cydeistedd

sit
sit: eistedd

situation
situation: n. sefyllfa

six
six: adj. chwe, six: adj. chwech

sixth
sixth: adj. chweched

sixtieth
sixtieth: adj. trigeinfed

sixty
sixty: adj. trigain

size
size: n. maint

skate
skate: sglefrio, skate: ysglefrio

skeleton
skeleton: n. sgerbwd

sketch
sketch: n. braslun, sketch: braslunio

skewness
skewness: n. sgiwedd

skilful
skilful: adj. cywrain, skilful: adj. medrus

skilled
skilled: adj. cyfarwydd

skill
skill: n. medr, skill: n. sgìl

skin
skin: n. croen, skin: blingo, skin: croeni, skin: digroeni

skip
skip: sgipio

ski
ski: sgio

skulk
skulk: sgwlcan, skulk: ystelcian, skulk: ystelcio

sky
sky: n. awyr

slacken
slacken: llacáu, slacken: llacio, slacken: llaesu, slacken: ymlaesu

slake thirst
slake thirst: disychedu, slake thirst: disychu

slander
slander: athrodi, slander: enllibio

slant
slant: goleddfu

slash
slash: n. slaes

slaver
slaver: glafoeri, slaver: glafoerio

slave
slave: n. caethwas

slavish
slavish: adj. slafaidd

slay
slay: dieneidio

sleep again
sleep again: ailgysgu

sleep
sleep: cysgu, sleep: huno

slice
slice: crymanu, slice: tafellu

slider
slider: n. llithrydd

slide
slide: n. tryloywder

slime
slime: n. llysnafedd

slim
slim: teneuo

slip
slip: llithro

slit
slit: agennu, slit: hicio

slobber
slobber: slobran

slope
slope: n. goledd, slope: n. llethr, slope: llechweddu

sloping
sloping: adj. goleddol

slot
slot: n. agen, slot: slotio

slow down
slow down: arafu

slow-moving
slow-moving: adj. araf-ei-symud

slow
slow: adj.sint. araf

small
small: adj.sint. bychain, small: adj.sint. bychan, small: adj.sint. fechan, small: adj.sint. bach

smart
smart: adj.sint. deallus

smash
smash: chwilfriwio

smell
smell: n. arogl, smell: n. aroglau, smell: arogli, smell: gwyntio, smell: sawrio, smell: sawru

smelt
smelt: mwyndoddi

smile sardonically
smile sardonically: mingamu

smile
smile: gwenu

smirk
smirk: cilwenu

smoke
smoke: n. mwg, smoke: mygu, smoke: smocio, smoke: smygu, smoke: ysmygu

smooth
smooth: adj.sint. esmwyth, smooth: adj.sint. llyfn, smooth: rhathu

smother
smother: mogi

smoulder
smoulder: mudlosgi

smuggle
smuggle: smyglo

snack
snack: n. byrbryd

snake
snake: n. neidr, snake: nadreddu

snapshot
snapshot: n. ciplun

snap
snap: n. snap

snare
snare: hoenynnu, snare: maglu

snarl
snarl: ysgyrnygu

snatch
snatch: n. cip, snatch: cipio

sneak
sneak: sleifio

sneeze
sneeze: tisian, sneeze: tisio, sneeze: twsian

sniffle
sniffle: snwffio

sniff
sniff: sniffian, sniff: snwffian

snigger
snigger: piffio

snore
snore: chwyrnu

snort
snort: ffroeni

snow
snow: n. eira, snow: eirio

soak
soak: gorwlychu, soak: ymdrochi

soap
soap: n. sebon, soap: seboni

sober up
sober up: sobreiddio, sober up: sobri, sober up: sobrio

sob
sob: beichio

socialism
socialism: n. sosialaeth

socialist
socialist: n. sosialydd, socialist: n. sosialwr, socialist: adj. sosialaidd

social security payment
social security payment: n. budd-dal

social
social: adj. cymdeithasol

society
society: n. cymdeithas

sociology
sociology: n. cymdeithaseg

socket
socket: n. soced

sod
sod: n. tywarch

soften
soften: meddalhau, soften: meddalu, soften: nawseiddio, soften: tyneru

softness
softness: n. meddalwch

soft
soft: adj.sint. meddal

software
software: n. meddalwedd

so good
so good: adj. cystal

soil
soil: n. pridd, soil: baeddu, soil: budro, soil: diwyno

solder
solder: sodro

soldier
soldier: n. milwr

sole
sole: gwadnu, sole: tapo

solidify
solidify: torthi

solid
solid: n. solid, solid: adj.sint. solet

soliloquise
soliloquise: ymson, soliloquise: ymsoni

solstice
solstice: n. alban

solubility
solubility: n. hydoddedd

solution
solution: n. datrysiad

solve
solve: datrys

so many
so many: adj. cynifer

someone
someone: prn. rhywun, someone: n. rhywun

some
some: adj. rhai, some: adj. rhyw

something
something: n. rhywbeth

somewhat
somewhat: adj. cryn

somewhere
somewhere: n. rhywle

song
song: n. cân

son
son: n. mab

soon
soon: adj. buan

soothing
soothing: adj. lliniarol

sophism
sophism: n. twyllresymeg

sophisticated
sophisticated: adj. soffistigedig

sort
sort: n. trefniad, sort: sortio

soul
soul: n. enaid

sound
sound: n. sain, sound: swnio, sound: swno

source
source: n. tarddiad, source: n. ffynhonnell

sour
sour: egru, sour: suro

south-east
south-east: n. de-ddwyrain

southern
southern: adj. deheuol

south
south: n. de

south-west
south-west: n. de-orllewin

sow
sow: hau, sow: heu

space-bar
space-bar: n. bylchwr

space
space: n. gofod, space: n. bwlch

spam
spam: n. ebostach

span
span: n. ystod, span: rhychwantu

spare
spare: sbario

sparkle
sparkle: gwreichioni, sparkle: serennu

spatial
spatial: adj. gofodol

speaker
speaker: n. llefarydd, speaker: n. seinydd, speaker: n. llefarwr, speaker: n. siaradwr

speak figuratively
speak figuratively: damhegu

speak indistinctly
speak indistinctly: bloesgi

speak rhetorically
speak rhetorically: rhethregu

spear
spear: picellu, spear: tryferu

specialise
specialise: arbenigo

specialist
specialist: n. arbenigwr, specialist: adj. arbenigol

speciality
speciality: n. arbenigrwydd

special
special: adj. arbennig

species
species: n. rhywogaeth

specification
specification: n. manyleb, specification: n. manyleb, specification: n. manyleb

specific
specific: adj. penodol, specific: adj. unswydd

spectator
spectator: n. gwyliwr

spectrum
spectrum: n. sbectrwm

speculate
speculate: hapfasnachu

speech
speech: n. lleferydd, speech: n. araith, speech: n. llafar

speedometre
speedometre: n. sbidomedr

speed
speed: n. cyflymder, speed: n. buanedd, speed: goryrru

spelling
spelling: n. sillafiad

spell
spell: sillafu

spend
spend: gwario, spend: treulio

sphere
sphere: n. cronnell, sphere: n. sffêr

spice
spice: n. sbeis

spill
spill: sarnu

spinner
spinner: n. troellwr

spinning wheel
spinning wheel: n. tröell

spin
spin: cogrdroi, spin: troelli

spin yarn
spin yarn: nyddu

spiral
spiral: n. sbiral

spirit
spirit: n. ysbryd

spiritualism
spiritualism: n. ysbrydegaeth

spirituality
spirituality: n. ysbrydolrwydd

spiritual
spiritual: adj. ysbrydol

spite
spite: sbeitio

spit
spit: poergarthu, spit: poeri

splash
splash: sblasio, splash: tasgu

splendid
splendid: adj. gwych, splendid: adj. penigamp

split
split: hollti

split up
split up: ymrannu

spoil
spoil: afradu, spoil: amharu, spoil: andwyo, spoil: babanu, spoil: sbwylio, spoil: ysbwylio

sponsor
sponsor: n. noddwr, sponsor: nawddogi

spooler
spooler: n. sbwlydd

spool
spool: n. sbwl

spoonful
spoonful: n. llwyaid

spoon
spoon: n. llwy, spoon: llwya

spot colour
spot colour: n. sbotliw

spot
spot: n. smotyn

spouse
spouse: n. cymhares, spouse: n. cymar

spout
spout: pistyllio, spout: pistyllu

sprain
sprain: ysigo

spray
spray: chwistrellu

spread out
spread out: ceincio, spread out: ymehangu

spreadsheet
spreadsheet: n. taenlen

spread
spread: lledu, spread: taenu, spread: tannu, spread: ymdannu, spread: ymledu

spring
spring: n. gwanwyn

sprinkle
sprinkle: sgeintio, sprinkle: taenellu, sprinkle: ysgeintio

sprint
sprint: sbrintio

sprout
sprout: blaendarddu, sprout: blaguro, sprout: brigo

spruce up
spruce up: graenio, spruce up: graenu

spur
spur: sbarduno

squad
squad: n. sgwad

squander
squander: afradloni, squander: camdreulio, squander: camwario

square
square: n. sgwâr, square: sgwario

squat
squat: cyrcydu

squeak
squeak: gwichian

squeeze
squeeze: gwasgu

squirrel away
squirrel away: gwiweru

squirt
squirt: jochio

stabilise
stabilise: sadio, stabilise: sefydlogi

stability
stability: n. sadrwydd, stability: n. sefydlogrwydd

stable
stable: adj. sefydlog

stack
stack: n. pentwr, stack: mydylu, stack: tasio, stack: tasu

stadium
stadium: n. stadiwm

staff
staff: n. ffon, staff: n. staff

stage
stage: n. llwyfan, stage: adj. llwyfannol, stage: llwyfannu

stagey
stagey: adj. llwyfannaidd

stain
stain: llychwino, stain: staenio, stain: staeno

stair
stair: n. gris

stakeholder
stakeholder: n. hapddalwr, stakeholder: n. rhanddeiliad

stake
stake: polioni

stall
stall: n. stondin

stamped
stamped: adj. stampiedig

stamp
stamp: n. stamp, stamp: pystylad, stamp: pystyladu, stamp: stampio, stamp: stampo

stand again
stand again: ailsefyll

standalone
standalone: adj. arunigol

standardise
standardise: safoni

standard
standard: n. safon, standard: adj. safonol

standby
standby: adj. segur

stand in the wrong place
stand in the wrong place: camsefyll

standpoint
standpoint: n. safbwynt

stand
stand: n. safiad, stand: sefyll

starch
starch: n. starts

stare
stare: llygadrythu, stare: syllio, stare: syllu

star
star: n. seren

start
start: cychwyn

starve
starve: newynu

state of mind
state of mind: n. meddylfryd

static
static: adj. statig

station
station: n. gorsaf

statistical
statistical: adj. ystadegol

statistics
statistics: n. ystadegaeth

statue
statue: n. cerflun

stature
stature: n. maintioli

status
status: n. statws

statutory
statutory: adj. statudol

stay
stay: n. arhosiad

steal
steal: dwyn, steal: lladroni

steam
steam: ageru

steep
steep: adj.sint. serth, steep: mwydioni, steep: mwydo

steer
steer: llywio

stencil
stencil: n. stensil

step-grandfather
step-grandfather: n. llys-daid

step-grandmother
step-grandmother: n. llys-nain

step-parent
step-parent: n. llys-riant

step
step: n. cam, step: cam, step: camu

stereotype
stereotype: ystrydebu

sterilise
sterilise: steryllu

stick
stick: n. ffon, stick: sticio

sticky
sticky: adj.sint. gludog

stiffen
stiffen: anystwytho

stigmatise
stigmatise: stigmateiddio

still
still: adj.sint. llonydd

stimulus
stimulus: n. symbyliad, stimulus: n. ysgogiad, stimulus: n. ysgogiad

sting
sting: colynnu

stink
stink: drewi

stipple
stipple: n. dotwaith

stipulate
stipulate: amodi

stir again
stir again: ailysgogi

stir
stir: brwysgio, stir: ysgogi, stir: ystwyrian

stitch
stitch: pwytho

stockholding
stockholding: n. stoc-ddaliad

stocklist
stocklist: n. stocrestr

stock
stock: n. stoc, stock: stocio

stomach
stomach: stumogi

stone
stone: n. carreg, stone: llabyddio

stook
stook: stocanu

stool
stool: n. carth

stoop
stoop: crymu, stoop: gwargrymu, stoop: gwarro

stop
stop: n. stop, stop: peidio, stop: stopio

store again
store again: ailstorio

store in a barn
store in a barn: ysguborio

store
store: n. storfa, store: storio

storm
storm: n. storm

story
story: n. hanes, story: n. stori

stove
stove: n. stof

straighten
straighten: diwyro, straighten: sythu, straighten: unioni

straightness
straightness: n. uniondeb

straight
straight: adj. syth

strainer
strainer: n. hidl

strain
strain: hidlo

stranger
stranger: n. dieithr

strange
strange: adj.sint. rhyfedd

strangle
strangle: llindagu

strap
strap: strapio

strategic
strategic: adj. strategol

strategy
strategy: n. strategaeth

stray
stray: cyfeiliorni

stream
stream: n. ffrwd, stream: llifeirio

street
street: n. stryd

strengthen
strengthen: cryffáu, strengthen: cryfhau, strengthen: grymuso, strengthen: nerthu

strength
strength: n. cryfder, strength: n. grym, strength: n. nerth

stress
stress: n. straen

stretchable
stretchable: adj. estynadwy

stride
stride: brasgamu

strike
strike: n. streic, strike: bwrw, strike: ergydio, strike: taro

striking
striking: adj. trawiadol, striking: adj. trawiadol

strim
strim: strimio

string
string: n. llinyn, string: llinynnu, string: rhibinio

strip of land
strip of land: n. llain

strip
strip: n. stribed, strip: noethi

strive
strive: ymdrechu, strive: ymdrin, strive: ymdrinio, strive: ymegnïo, strive: ymlafnio, strive: ymlafurio, strive: ymwthio

stroke
stroke: n. trawiad, stroke: llofelu

stroll
stroll: cerddetan

strong
strong: adj. cryf

structural
structural: adj. strwythurol

structured
structured: adj. strwythuredig

structure
structure: n. adeiledd, structure: n. strwythur, structure: n. adeiladwaith, structure: strwythuro

student
student: n. myfyriwr

studio
studio: n. stiwdio

study
study: n. astudiaeth, study: n. efryd, study: astudio, study: efrydio, study: efrydu

stuff
stuff: stwffio

stumble
stumble: tramgwyddo

stump
stump: n. bôn

stunning
stunning: adj. syfrdanol

stutter
stutter: cecian

style
style: n. arddull, style: n. steil, style: arddullio

sub-committee
sub-committee: n. is-bwyllgor

subconscious
subconscious: adj. isymwybodol

subdirectory
subdirectory: n. isgyfeiriadur

subdivide
subdivide: isrannu

sub-division
sub-division: n. is-adran

subject
subject: n. pwnc

subjugate
subjugate: darostwng

sublet
sublet: isosod

sublimate
sublimate: sychdarthu

submarine
submarine: adj. tanfor

submerge
submerge: tansoddi, submerge: tansuddo

submissive
submissive: adj. gwrogaethol

sub-panel
sub-panel: n. is-banel

sub-paragraph
sub-paragraph: n. is-baragraff

subscribed
subscribed: adj. tanysgrifiedig

subscribe
subscribe: tanysgrifio

subscription
subscription: n. tanysgrifiad

subsequent
subsequent: adj. dilynol

subset
subset: n. is-set

subsidy
subsidy: n. cymhorthdal, subsidy: n. cymhorthdal

substance
substance: n. sylwedd

substantial
substantial: adj. sylweddol

substantiate
substantiate: gwirioneddu

subtract
subtract: didynnu

succeed
succeed: llwyddo

successful
successful: adj. llwyddiannus

successor
successor: n. olynwr

success
success: n. llwyddiant

succour
succour: achlesu, succour: ymgeleddu

suck
suck: sugno

sudden
sudden: adj. sydyn

suffering
suffering: n. dioddef, suffering: n. dioddefaint

suffer
suffer: dioddef, suffer: goddef

suffer together
suffer together: cyd-ddioddef

suffice
suffice: digoni

sufficiency
sufficiency: n. digonolrwydd

sufficient
sufficient: adj. digonol

suffix
suffix: n. olddodiad, suffix: olddodi

suffocate
suffocate: mygu

sugar
sugar: n. siwgr

suggested
suggested: adj. awrgrymedig

suggestion
suggestion: n. awgrymiad

suggest
suggest: awgrymu

suicide
suicide: n. hunanladdiad

suitable
suitable: adj. cyfaddas, suitable: adj. pwrpasol

suit
suit: gweddu, suit: siwtio

sulk
sulk: pwdu, sulk: sorri

sully
sully: halogi

summarise
summarise: crynhoi, summarise: crynodebu

summary
summary: n. crynodeb

summer
summer: n. haf

summit
summit: n. copa, summit: n. copa

summon
summon: gwysio

sum
sum: n. sym, sum: n. swm

sunbathe
sunbathe: bolaheulo, sunbathe: bolheulo, sunbathe: torheulo, sunbathe: ymheulo

sunday
Sunday: n. Sul

sunshine
sunshine: n. heulwen

sun
sun: n. haul, sun: heulo

superior
superior: adj. uwchradd

supermarket
supermarket: n. uwchfarchnad

super-
super-: adj. uwch-

superuser
superuser: n. uwchddefnyddiwr

supervise
supervise: arolygu, supervise: goruchwylio

supervisor
supervisor: n. goruchwyliwr

supper
supper: n. swper

supplant
supplant: disodli

supplementary
supplementary: adj. atodol

supplement
supplement: n. atodlen

supple
supple: adj. ystwyth

supplies
supplies: n. cyflenwadau

supply
supply: n. cyflenwad, supply: cyflenwi

supported
supported: adj. cynaliedig

supporter
supporter: n. cefnogwr, supporter: n. cynhaliwr

support jointly
support jointly: cydgefnogi

support
support: n. cefnogaeth, support: n. cynhaliaeth, support: ategu, support: cefnogi, support: cyfatal, support: cynnal, support: cynorthwyo, support: ochri, support: pleidio

suppose
suppose: tybied, suppose: tybio

supposition
supposition: n. tybiaeth

sure
sure: adj.sint. sicr, sure: adj.sint. siwr, sure: adj.sint. siwr

surface
surface: n. arwyneb

surfeit
surfeit: n. syrffed

surgery
surgery: n. meddygfa

surge
surge: n. ymchwydd

surgical
surgical: adj. llawfeddygol

surprise
surprise: n. syndod

surround
surround: amgylchu, surround: amgylchynu, surround: cwmpasu, surround: cylchynu

survey
survey: n. arolwg

survive
survive: goroesi

suspicion
suspicion: n. amau, suspicion: n. amheuaeth

suspicious
suspicious: adj. amheus

sustainability
sustainability: n. cynaliadwyedd

sustainable
sustainable: adj. cynaladwy, sustainable: adj. cynaliadwy

sustain
sustain: maentumio

swagger
swagger: torsythu, swagger: ymsythu

swallow
swallow: llyncu

swarm
swarm: heidio, swarm: heigio

swathe
swathe: rhwymynnu

swear falsely
swear falsely: camdyngu

swear
swear: rhegi, swear: tynghedu, swear: tyngu

sweat
sweat: n. chwys

sweep away
sweep away: dysgub

sweeping
sweeping: adj. ysgubol

sweep
sweep: ysgubo

sweeten
sweeten: melysu, sweeten: pereiddio

sweet
sweet: n. losen, sweet: adj.sint. melys

swell
swell: chwyddhau, swell: ymchwyddo

swim
swim: nofio

swindle
swindle: hudladrata

swing
swing: siglo

swirl
swirl: n. troelliad

switchboard
switchboard: n. switsfwrdd

switch
switch: n. swits, switch: switsio

swoon
swoon: llesmeirio

syllabary
syllabary: n. sillwyddor

syllable
syllable: n. sillaf

syllogise
syllogise: cyfresymu

symbolic
symbolic: adj. symbolaidd

symbolism
symbolism: n. symboliaeth

symbol
symbol: n. symbol

symmetrical
symmetrical: adj. cymesur, symmetrical: adj. cymesurol

symmetry
symmetry: n. cymesuredd

sympathise
sympathise: cyd-deimlo, sympathise: cydymdeimlo

symposium
symposium: n. symposiwm

symptom
symptom: n. symptom

synagogue
synagogue: n. synagog

synchronisation
synchronisation: n. cydamseriad, synchronisation: n. cysoniad

synchronise
synchronise: cyfamseru

synchronous
synchronous: adj. cydamseredig

syncopate
syncopate: trawsacennu

synergy
synergy: n. synergedd

synonymous
synonymous: adj. cyfystyr

synonym
synonym: n. cyfystyr

syntax
syntax: n. cystrawen

synthesiser
synthesiser: n. syntheseisydd

synthesise
synthesise: adj. syntheseiddio

synthesis
synthesis: n. synthesis

synthetic
synthetic: adj. synthetig

systematic
systematic: adj. systematig

systematise
systematise: cyfundrefnu

system
system: n. cyfundrefn, system: n. system

system tray
system tray: n. cilfach

table
table: n. bwrdd

tab
tab: n. tab

tabulator
tabulator: n. tablydd

tackle
tackle: taclo, tackle: taclu

tack
tack: tacio

tactical
tactical: adj. tactegol

tactic
tactic: n. tacteg

tag
tag: n. tag

tailor
tailor: teilwra, tailor: teilwrio

tail
tail: n. cynffon

take an interest
take an interest: ymddiddori

take care
take care: gofalu

take heed
take heed: carcu

take it easy
take it easy: hamddena

take pains
take pains: ymboeni

take precautions
take precautions: rhagofalu

take precedence
take precedence: blaenoriaethu

take pride in
take pride in: ymhyfrydu

take revenge
take revenge: dial

take
take: cymeryd, take: cymryd

talented
talented: adj. talentog

talent
talent: n. dawn

tale
tale: n. chwedl

talk nonsense
talk nonsense: cyboli

talk
talk: siarad

tallness
tallness: n. taldra

tallow
tallow: n. gwêr

tall
tall: adj.sint. tal

tame
tame: dofi, tame: gwarhau

tangent
tangent: n. tangiad

tangram
tangram: n. tangram

tanker
tanker: n. tancer

tan
tan: adj. melynddu

tape
tape: n. tâp, tape: tapio

tap
tap: cnithio

target
target: n. targed, target: n. targed, target: targedu

tartan
tartan: n. plod

taskforce
taskforce: n. tasglu

task
task: n. tasg, task: n. gorchwyl

taste
taste: n. blas, taste: blasu, taste: profi

tattle
tattle: clegru, tattle: clepio

taunt
taunt: sennu

tavern
tavern: n. tafarn

taxable
taxable: adj. trethadwy

taxi
taxi: n. tacsi

taxpayer
taxpayer: n. trethdalwr

tax
tax: n. treth, tax: trethu

teacher
teacher: n. athrawes, teacher: n. athro

teach
teach: dysgu

team
team: n. tîm

tearoff
tearoff: adj. rhwygadwy

tear
tear: carpio, tear: carpu, tear: darnio, tear: rhwygo

tear to bits
tear to bits: llyfrïo

tease
tease: hambygio, tease: herian, tease: profocio, tease: pryfocio

tea
tea: n. te

technical
technical: adj. technegol

technique
technique: n. techneg

technological
technological: adj. technolegol

technology
technology: n. technoleg

telecommunication
telecommunication: n. telathrebiad

teleconference
teleconference: telegynadledda

tele-health
tele-health: adj. tele-iechyd

telephone
telephone: n. teleffon

telephony
telephony: n. teleffoni

telesales
telesales: n. telewerthu

televise
televise: teledu

television
television: n. teledu

telex
telex: telecsio

tell a tale
tell a tale: chwedleua

tell tales
tell tales: clapian, tell tales: clecian

temperature
temperature: n. tymheredd

temper
temper: tempro, temper: tempru, temper: tymheru

template
template: n. patrymlun

temporal
temporal: adj. tymhorol

temptation
temptation: n. temtasiwn

tempt
tempt: temtio

tenancy
tenancy: n. tenantiaeth

tenant
tenant: n. tenant, tenant: n. deiliad

tendency
tendency: n. tuedd, tendency: n. tueddiad, tendency: n. gogwydd

tender
tender: n. tendr

tend
tend: tendio

tend to
tend to: tueddu

tennis
tennis: n. tenis

tension
tension: n. tensiwn

tentative
tentative: adj. petrus

ten
ten: n. deg, ten: adj. deg, ten: adj. deng

tenth
tenth: adj. degfed

tent
tent: n. pabell

terminal
terminal: n. terfynell

terminate
terminate: terfynu

termination
termination: n. terfyniad

terminology
terminology: n. termeg

term
term: n. teler, term: n. term

terrible
terrible: adj. ofnadwy

terrify
terrify: brawychu, terrify: bygylu

territory
territory: n. tiriogaeth

terrorise
terrorise: terfysgu

tessellation
tessellation: n. brithwaith

testify
testify: tystio, testify: tystiolaethu

testimony
testimony: n. tystiolaeth

test
test: n. prawf

tetrahedron
tetrahedron: n. tetrahedron

tetromino
tetromino: n. tetromino

text
text: n. testun

textual
textual: adj. testunol

texture
texture: n. gwead

thanks
thanks: n. diolch

thank
thank: diolch

that
that: det.dem.sg. yna, that: det.dem.pl. yna, that: rel. a

thaw
thaw: meirioli

theatre
theatre: n. theatr

their
their: det.pos. eu

theme
theme: n. thema

the morrow
the morrow: n. trannoeth

then
then: adv. hefyd

theology
theology: n. diwinyddiaeth

theoretical
theoretical: adj. damcaniaethol

theorise
theorise: damcaniaethu, theorise: damcanu

theory
theory: n. theori

therapeutic
therapeutic: adj. therapiwtig

therapist
therapist: n. therapydd

therapy
therapy: n. therapi

thermodynamic
thermodynamic: adj. thermodynamig

thermometre
thermometre: n. thermomedr

thesaurus
thesaurus: n. thesawrus, thesaurus: n. thesawrws

the
the: det. yr

thickness
thickness: n. trwch

thick
thick: adj.sint. trwchus

thing
thing: n. peth

think logically
think logically: rhesymegu

think
think: meddwl, think: synied, think: synio, think: ymsynio

thin
thin: adj.sint. tenau

third
third: adj. trydedd, third: adj. trydydd

thirst
thirst: sychedu

this
this: det.dem.sg. yma, this: det.dem.pl. yma, this: det.dem.sg. hon, this: det.dem. yr, this: adj. hwn

thistle
thistle: n. ysgallen

thoroughfare
thoroughfare: n. tramwyfa

thorough
thorough: adj. trwyadl, thorough: adj. trylwyr

thought
thought: n. meddwl

thousand
thousand: n. mil

thrash about
thrash about: ymrwyfo

thrash
thrash: colbio, thrash: waldio

threaded
threaded: adj. edafeddedig

thread
thread: n. edau

threaten
threaten: bygwth, threaten: bygythio, threaten: bytheirio

threat
threat: n. bygythiad, threat: n. bygwth

three-dimensional
three-dimensional: adj. tri-dimensiwn

three
three: adj. tair, three: adj. tri

thresholds
thresholds: n. trothwyau

threshold
threshold: n. trothwy

thresh
thresh: dyrnu

throughput
throughput: n. trwybwn

through
through: pr. trwy, through: pr. drwy

throw a tantrum
throw a tantrum: strancio

throw
throw: n. bwrw, throw: lluchio, throw: taflu, throw: tawlu

th
th: adj. fed

thumb
thumb: n. bawd, thumb: bodio

thunder
thunder: taranu, thunder: tyrfo, thunder: tyrfu

ticker
ticker: n. ticer

ticket
ticket: n. tocyn

tickle
tickle: goglais, tickle: gogleisio

ticklish
ticklish: adj. gogleisiol

tick
tick: ticio, tick: tipian

tidy oneself
tidy oneself: ymdaclo, tidy oneself: ymdaclu

tidy
tidy: cymhennu, tidy: tacluso, tidy: twtio

tie in a bundle
tie in a bundle: ffasgu

tie into faggots
tie into faggots: ffagodi

tie
tie: clymu

tiger
tiger: n. teigr

tighten
tighten: tynhau

tightness
tightness: n. tynder

tight
tight: adj.sint. clos

tilde
tilde: n. tild

tile
tile: n. teilsen

till
till: n. til

timed
timed: adj. amseredig

timeliness
timeliness: n. amseroldeb

timely
timely: adj. amserol, timely: adj. prydlon

timeout
timeout: n. goramser

timer
timer: n. amserydd

timestamp
timestamp: n. amsernod

timetable
timetable: n. amserlen

time
time: n. adeg, time: n. amser, time: n. gwaith, time: amseru

timezone
timezone: n. amserfa

timid
timid: adj. ofnus

timing
timing: n. amseriad

tinkle
tinkle: tincial, tinkle: tincio

tin
tin: n. tun

tint
tint: n. arlliw, tint: cyfliwio

tiny
tiny: adj.sint. pitw

tipple
tipple: potio, tipple: slotian, tipple: yslotian

tip
tip: n. cynghoryn

tire
tire: blino, tire: lluddedu, tire: nogio

tissue
tissue: n. meinwe

tithe
tithe: n. degwm, tithe: degymu

title
title: n. teitl

toady
toady: cynffonna

toast
toast: tostio

tobacco
tobacco: n. tybaco

together with
together with: pr. ynghyd â

toggle
toggle: toglo

tolerate
tolerate: cydymddwyn

tomato
tomato: n. tomaten

tone
tone: n. tôn

ton
ton: n. tunnell

tool
tool: n. erfyn, tool: n. erfyn

too much
too much: n. gormod

tooth
tooth: n. dant

too
too: adj. rhy

top
top: n. top

top view
top view: n. uwcholwg

torture
torture: arteithio, torture: dirboeni, torture: dirdynnu, torture: poenydio

total
total: n. cyfanswm

to
to: pr. i

totter
totter: haldian, totter: haldio, totter: honcio, totter: simsan, totter: simsanu

touch
touch: cyffwrdd

toughen
toughen: gwydnhau

tourism
tourism: n. twristiaeth

tourist
tourist: adj. twristaidd

towards
towards: pr. at, towards: pr. tua

tower
tower: n. twr

town
town: n. tre, town: n. tref

trace
trace: n. trywydd, trace: dargopïo, trace: tresio

tracker
tracker: n. dilynydd

track
track: n. trac, track: n. ôl, track: olrhain, track: tracio

traction
traction: n. hydyniad

trader
trader: n. marsiandïwr

trade
trade: marchnata, trade: masnachu

traditional
traditional: adj. traddodiadol

tradition
tradition: n. traddodiad

traffic
traffic: n. traffig, traffic: n. trafnidiaeth

trail
trail: n. trywydd

trained
trained: adj. hyfforddedig

trainee
trainee: n. hyfforddai

trainer
trainer: n. hyfforddwr

training
training: n. hyfforddiant, training: adj. hyfforddiadol

train
train: n. trên, train: hyfforddi, train: treinio

trample on
trample on: mathru

trample
trample: damsangu, trample: migno, trample: sangu, trample: sathru, trample: sengi

tramp
tramp: trampio, tramp: trampo

transaction
transaction: n. trafod

transcribe
transcribe: adysgrifio

transfer
transfer: n. transffer, transfer: n. trosglwyddiad, transfer: n. troslun, transfer: trosglwyddo

transformation
transformation: n. trawsffurfiad

transform supernaturally
transform supernaturally: rhithio

transform
transform: gweddnewid, transform: trawsffurfio

transfuse
transfuse: trallwyso

transgress
transgress: camweddu, transgress: troseddu

transient
transient: adj. byrhoedlog

transitional
transitional: adj. trawsnewidiol

transition
transition: n. trawsnewidiad

translated
translated: adj. cyfieithiedig

translate
translate: cyfieithu, translate: trosi

translation
translation: n. cyfieithiad, translation: n. trawsfudiad

translator
translator: n. cyfieithydd

transliterate
transliterate: trawslythrennu

translucent
translucent: adj. tryleu

transmigrate
transmigrate: trawsfudo

transmit
transmit: trawsyrru

transparency
transparency: n. tryloywder

transparent
transparent: adj. tryloyw

transplant
transplant: trawsblannu

transport
transport: n. cludiant, transport: trawsgludo

transpose
transpose: trawsddodi, transpose: trawsgyweirio, transpose: trawsleoli

transposition
transposition: n. trawsgyweiriad

trapezium
trapezium: n. trapesiwm

trap
trap: trapio

traveller
traveller: n. teithiwr

travel together
travel together: cyd-deithio

travel
travel: teithio

traverse
traverse: tramwyo

trawl
trawl: treillio

tray
tray: n. hambwrdd

tread
tread: troedio

treasure
treasure: trysori

treasury
Treasury: n. trysorlys

treatment
treatment: n. triniaeth, treatment: n. ymdriniaeth

treat
treat: meddyginiaethu, treat: trin, treat: trinio

treat with disrespect
treat with disrespect: anurddo

treble
treble: treblan, treble: treblu

trees
trees: n. coed

tree
tree: n. coeden

tremble
tremble: crydio, tremble: crydu, tremble: gogrynu

trespass
trespass: tresbasu, trespass: tresmasu

trial
trial: n. treial, trial: treialu

triangle
triangle: n. triongl

triangular
triangular: adj. trionglog

tribe
tribe: n. llwyth

tribunal
tribunal: n. tribiwnlys

trickle
trickle: defnynnu

trifle
trifle: n. corodyn

trigger
trigger: n. clicied

trigonometrical
trigonometrical: adj. trigonometregol

trim
trim: cropio, trim: tocio, trim: trimio

triple
triple: adj. triphlyg

trip
trip: baglu, trip: tripio

trip up
trip up: didroedio

trisect
trisect: teirannu

triumphant
triumphant: adj. gorfoleddus

trivial
trivial: adj. dibwys

tromino
tromino: n. tromino

trot
trot: trotian, trot: trotio, trot: tuthian, trot: tuthio

trouble-free
trouble-free: adj. didrafferth

trouble
trouble: n. trafferth, trouble: trafferthu, trouble: trwblio, trouble: trwblo

truancy
truancy: n. triwantiaeth

truck
truck: n. tryc

true
true: adj.sint. gwir

trump
trump: trwmpo

truncate
truncate: blaendorri

truss
truss: pynio

trusted
trusted: adj. ymddiriedol

trustee
trustee: n. ymddiriedolwr

trusting
trusting: adj. ymddiriedgar

trust
trust: n. ymddiried, trust: n. ymddiriedolaeth, trust: trystio, trust: ymddiried, trust: ymddiriedu

trustworthy
trustworthy: adj. ymddiriedadwy

truth
truth: n. gwirionedd

truth-value
truth-value: n. gwirwerth

tsunami
tsunami: n. rhyferthwy

tuck
tuck: tycio

tuesday
Tuesday: n. Dydd Mawrth

tumble
tumble: codymu, tumble: ymdreiglo

tune
tune: tiwnio

tunnel
tunnel: n. twnnel, tunnel: twnelu

turban
turban: n. twrban

turf
turf: tywarchu

turn deathly pale
turn deathly pale: gwynlasu

turn green
turn green: gwyrddu

turning
turning: n. troad

turnover
turnover: n. trosiant

turn pale
turn pale: wyneblasu

turn sour
turn sour: chwiblo

turn
turn: n. troad, turn: n. tro, turn: troi, turn: turnio

turn up
turn up: gwalcio

turn your back on
turn your back on: cefnu

turpentine
turpentine: n. tyrpant

tutorial
tutorial: n. cyfarwyddiad, tutorial: n. hyfforddiad

tutor
tutor: n. tiwtor

twelfth
twelfth: adj. deuddegfed

twelve
twelve: adj. deuddeg

twentieth
twentieth: adj. ugeinfed

twenty
twenty: adj. ugain

twice-yearly
twice-yearly: adj. dwywaith-y-flwyddyn

twine
twine: cordeddu

twinkle
twinkle: pefrio

twin
twin: gefeillio

twisting
twisting: adj. troellog

twitter
twitter: trydar

two-dimensional
two-dimensional: adj. dau-ddimensiwn

two-month period
two-month period: n. deufis

two-thirds
two-thirds: n. deuparth

two
two: adj. dau, two: adj. dwy

two-way
two-way: adj. deuffordd

typeface
typeface: n. wynebfath

typeset
typeset: cysodi

type
type: n. math, type: n. teip, type: teipio

typewriter
typewriter: n. teipiadur

typography
typography: n. teipograffeg

ugly
ugly: adj.sint. hyll

ulcerate
ulcerate: cramennu

ultimate
ultimate: adj. eithaf

unacceptable
unacceptable: adj. annerbyniol

unanimous
unanimous: adj. unfarn, unanimous: adj. unfryd, unanimous: adj. unfrydol

unapologetic
unapologetic: adj. anymddiheurol

unary
unary: adj. unaidd

unauthorised
unauthorised: adj. anawdurdodedig

unbalanced
unbalanced: adj. anghytbwys

unbiased
unbiased: adj. diduedd, unbiased: adj. diduedd

unbrowseable
unbrowseable: adj. amhoradwy

uncertainty
uncertainty: n. ansicrwydd

uncertain
uncertain: adj. ansicr

unclear
unclear: adj. aneglur

uncommon
uncommon: adj. anghyffredin

unconditional
unconditional: adj. diamod

undefined
undefined: adj. anniffiniedig

underestimate
underestimate: tanamcangyfrifo

undergraduate
undergraduate: n. is-raddedig, undergraduate: adj. is-raddedig

underinvest
underinvest: tanfuddsoddi

underline
underline: tanlinellu

underlying
underlying: adj. gwaelodol

undermine
undermine: datseilio, undermine: tangloddio, undermine: tanseilio

underperform
underperform: tanberfformio

underscore
underscore: n. tanlinelliad

understandable
understandable: adj. dealladwy

understanding
understanding: n. dealltwriaeth

understand
understand: deall

undertake
undertake: ymgymryd

undertaking
undertaking: n. ymgymeriad

under
under: pr. dan, under: pr. tan

undo
undo: datod, undo: datroi

undress
undress: dadwisgo, undress: dihatru, undress: dihatryd, undress: ymddihatru, undress: ymddiosg

unearth
unearth: dibriddo

unemployment
unemployment: n. diweithdra

unequal
unequal: adj. anghyfartal, unequal: adj. anhafal

unexpected
unexpected: adj. annisgwyl

unfair
unfair: adj. annheg

unfamiliar
unfamiliar: adj. anghyfarwydd

unfavourable
unfavourable: adj. anffafriol

unfortunate
unfortunate: adj. anffodus

unhappiness
unhappiness: n. annedwyddwch

unhappy
unhappy: adj.sint. anhapus

unhitch
unhitch: dadfachu

unicorn
unicorn: n. uncorn

unified
unified: adj. unedig

uniformity
uniformity: n. unffurfiaeth

uniform
uniform: adj. unffurf

uninhibited
uninhibited: adj. diymatal

unintentional
unintentional: adj. anfwriadol

uninterrupted
uninterrupted: adj. didor

uninvited
uninvited: adj. diwahodd

union
union: n. undeb

unique
unique: adj. unigryw

unitary
unitary: adj. unedol

united
united: adj. unol

unite
unite: cyduno, unite: cyfanhau, unite: uno, unite: unoli

unit
unit: n. uned

unity
unity: n. undod

university
university: n. prifysgol

unknown
unknown: adj. anhysbys

unlikely
unlikely: adj. annhebygol

unlimited
unlimited: adj. diderfyn

unload
unload: dadlwytho

unlock
unlock: datgloi

unmarried
unmarried: adj. dibriod

unmodified
unmodified: adj. anaddasedig

unnecessary
unnecessary: adj. diangen, unnecessary: adj. dianghenrhaid

unorthodox
unorthodox: adj. anuniongred

unpack
unpack: dadbacio

unperformed action
unperformed action: n. anweithred

unpleasant
unpleasant: adj. annymunol

unprepared
unprepared: adj. amharod

unreachable
unreachable: adj. anghyrhaeddol

unreadable
unreadable: adj. annarllenadwy

unrealistic
unrealistic: adj. afrealistig

unrecognised
unrecognised: adj. anadnabyddus

unrecoverable
unrecoverable: adj. anadferadwy

unrequested
unrequested: adj. di-gais

unsatisfactory
unsatisfactory: adj. anfoddhaol

unscrew
unscrew: dadsgriwio

unseal
unseal: datselio

unsettle
unsettle: ansefydlogi

unset
unset: adj. diosod

unsheathe
unsheathe: dadweinio, unsheathe: diweinio

unsigned
unsigned: adj. diarwydd

unspecified
unspecified: adj. amhenodol

unstable
unstable: adj. ansad

unstitch
unstitch: dadbwytho

unsuccessful
unsuccessful: adj. aflwyddiannus

untie
untie: datglymu

until
until: pr. hyd, until: pr. tan

untraditional
untraditional: adj. anhraddodiadol

untrue
untrue: adj. anwir

untrusted
untrusted: adj. diymddiriedol

unusual
unusual: adj. anarferol

unwanted
unwanted: adj. annymunol

unwilling
unwilling: adj. anfodlon

unwise
unwise: adj. annoeth

upbraid
upbraid: edliw, upbraid: edliwio

updated
updated: adj. diweddaredig

update
update: n. diweddariad, update: diweddaru

upgrade
upgrade: n. uwchraddiad, upgrade: uwchraddio

uplifting
uplifting: adj. dyrchafol

upload
upload: n. lanlwythiad

upper-case
upper-case: adj. priflythrennol

uproot
uproot: dadwraidd, uproot: dadwreiddio, uproot: diwraidd, uproot: diwreiddio

urban
urban: adj. trefol

urdd
Urdd: n. Urdd

urgent
urgent: adj. taer

urge
urge: annog, urge: cymell, urge: darbwyllo, urge: symlu

useable
useable: adj. defnyddiadwy

use a metaphor
use a metaphor: trosiadu

use as a proverb
use as a proverb: diarhebu

use bellows
use bellows: megina

useful
useful: adj. defnyddiol

useless
useless: adj. diwerth

username
username: n. defnyddenw

user
user: n. defnyddiwr

use
use: arfer, use: defnyddio

usual
usual: adj. arferol

usurp
usurp: trawsfeddiannu

utility
utility: n. defnyddioldeb

utter
utter: llefaru, utter: parablu

vaccinate
vaccinate: brechu, vaccinate: buchfrechu

vaccination
vaccination: n. bufrechiad

vacillate
vacillate: gwamalu

vacuum
vacuum: n. gwactod, vacuum: n. gwagle

vale
vale: n. ystrad

validate
validate: dilysu

validation
validation: n. dilysiad

validator
validator: n. dilysydd

validity
validity: n. dilysrwydd

valid
valid: adj. dilys

valley
valley: n. dyffryn

valuable
valuable: adj. gwerthfawr

valuation
valuation: n. prisiad

value
value: n. gwerth

vandalise
vandalise: fandaleiddio

vandalism
vandalism: n. fandaliaeth

van
van: n. fan

variable
variable: n. newidyn, variable: adj. amrywiadwy, variable: adj. cyfnewidiol, variable: adj. newidiol, variable: adj. newidol

variation
variation: n. amrywiad

variety
variety: n. amrywiaeth

various
various: adj. amryw

varnish
varnish: barneisio, varnish: farneisio

vary
vary: amrywio

v.a.t.
V.A.T.: n. T.A.W.

vault
vault: ymdaflu

vector
vector: n. fector

veer
veer: gwyro

vegetable
vegetable: n. llysieuyn

vegetation
vegetation: n. llystyfiant

velocity
velocity: n. cyflymder

ventilate
ventilate: awyro, ventilate: gwyntyllu

venture
venture: anturio, venture: mentro

verbal noun
verbal noun: n. berfenw

verb
verb: n. berf

verdict
verdict: n. dedfryd, verdict: n. dyfarniad

verify
verify: gwireddu

verse
verse: n. pennill

versify
versify: awenyddu, versify: cywyddu, versify: mydryddu, versify: prydu, versify: prydyddu

version
version: n. fersiwn

vertex
vertex: n. fertig

vertically opposite
vertically opposite: adj. croesfertig

vertical
vertical: adj. fertigol

veterinary
veterinary: adj. milfeddygol

veto
veto: feto

vex
vex: cystuddio, vex: nychu

viability
viability: n. hyfywedd

viable
viable: adj. hyfyw

viaduct
viaduct: n. traphont

vibrate
vibrate: dirgrynu

victimise
victimise: fictimeiddio

victim
victim: n. dioddefwr

victorious
victorious: adj. gorchfygus

victory
victory: n. buddugoliaeth

video
video: n. fideo

viewer
viewer: n. gwelydd

view
view: n. golwg

village
village: n. pentre, village: n. pentref

violate
violate: difwyno

violet
violet: n. fioled

virtual
virtual: adj. rhith, virtual: adj. rhithiol

virtue
virtue: n. rhinwedd

virus
virus: n. feirws

visa
visa: n. fisa

visible
visible: adj. gweladwy, visible: adj. gweledig

vision
vision: n. gweledigaeth

visitor
visitor: n. ymwelydd, visitor: n. ymwelwr

visit
visit: n. ymweliad, visit: ymweld

visualisation
visualisation: n. dychmygiad

visualiser
visualiser: n. dychmygydd

visual
visual: n. gwelediad, visual: adj. gweledol

vocabularies
vocabularies: n. geirfaoedd

vocabulary
vocabulary: n. geirfa

vocal
vocal: adj. seiniol

vocational
vocational: adj. galwedigaethol

voice
voice: n. llais, voice: lleisio

volume
volume: n. cyfrol, volume: n. cyfaint

voluntary
voluntary: adj. gwirfoddol

volunteer
volunteer: n. gwirfoddolwr, volunteer: gwirfoddoli

vomit
vomit: chwydu, vomit: cyfogi

voter
voter: n. etholwr, voter: n. etholydd

vote
vote: n. pleidlais, vote: pleidleisio

vowel
vowel: n. llafariad

vow
vow: addunedu, vow: ymdynghedu

vulnerable
vulnerable: adj. archolladwy

waddle
waddle: bongamu

wage
wage: n. cyflog

wail
wail: dirnadu, wail: dolefain, wail: galaru, wail: udo, wail: wylofain

wait
wait: aros, wait: gweitied, wait: gweitio

waken
waken: deffro, waken: deffroi

wake
wake: dihuno

walk briskly
walk briskly: brysgerdded

walker
walker: n. cerddwr

walk
walk: cerdded, walk: llwybro

wallet
wallet: n. waled

wallop
wallop: wado, wallop: whado

wallow
wallow: creinio, wallow: tryboli, wallow: ymdrybaeddu

wall
wall: n. mur, wall: n. wal, wall: magwyro, wall: walio

wandering
wandering: adj. disberod

wander
wander: crwydro

want
want: n. eisiau, want: n. isio

warble
warble: telori

wardrobe
wardrobe: n. gwardrob

ward
ward: n. ward

warehouse
warehouse: n. stordy, warehouse: n. warws

warmth
warmth: n. cynhesrwydd, warmth: n. gwres

warm
warm: adj.sint. gwresog, warm: adj. cynnes, warm: cynhesu, warm: poethi, warm: twymno

warn again
warn again: ailrybuddio

warning
warning: n. rhybudd

warn
warn: rhybuddio

warrant
warrant: n. gwarant

war
war: n. rhyfel

wash oneself
wash oneself: ymolchi

wash out
wash out: allolchi

wash
wash: golchi

waste away
waste away: crabio, waste away: diharffu

wasteheap
wasteheap: n. tomen

waste
waste: n. gwastraff, waste: gwastraffu

watch
watch: n. wats, watch: n. oriawr, watch: gwylio

water-colour
water-colour: n. dyfrlliw

water
water: n. dwr, water: dyfrhau, water: dyfrio, water: dyfru

wavelength
wavelength: n. tonfedd

wave
wave: n. ton, wave: chwifio

way
way: n. ffwrdd

weaken
weaken: gwanhau, weaken: gwanychu

weakness
weakness: n. gwendid

weak
weak: adj.sint. gwan

wealth
wealth: n. cyfoeth

wealthy
wealthy: adj. cyfoethog

wean
wean: diddyfnu

weapon
weapon: n. arf

weather
weather: n. tywydd, weather: hindreulio

weave
weave: gwehyddu, weave: ystofi

weaving
weaving: n. gwead

web-browser
web-browser: n. porydd

webmaster
webmaster: n. gwefeistr

website
website: n. safwe, website: n. gwefan

web
web: n. gwe

wednesday
Wednesday: n. Dydd Mercher

weed
weed: chwynnu

weekend
weekend: n. penwythnos

weekly
weekly: adj. wythnosol

week
week: n. wythnos

weep
weep: gwepio, weep: wylo

weight
weight: n. pwys, weight: n. pwysyn

weigh
weigh: pwyso

welcome
welcome: n. croeso, welcome: croesawu

well-dressed
well-dressed: adj. trwsiadus

well-wisher
well-wisher: n. caredig

welshness
Welshness: n. Cymreictod

welsh person
Welsh person: n. Cymraes, Welsh person: n. Cymro

welsh
Welsh: n. Cymraeg, Welsh: adj. Cymraeg, Welsh: adj. Cymreig

western
western: adj. gorllewinol

west
west: n. gorllewin

wet
wet: adj. gwlyb

wheel
wheel: n. olwyn, wheel: olwynio

whet
whet: awchu, whet: hogi

which
which: adj. pa

while
while: n. chweil

whine
whine: crewtio

whinny
whinny: gweryru

whip
whip: chwipio

whirl
whirl: chwyrlïo, whirl: chwyrnellu

whisky
whisky: n. chwisgi

whisper
whisper: sibrwd

whistle
whistle: chwibanu, whistle: chwibianu

whiten
whiten: gwynnu

whitespace
whitespace: n. gofod

whitewash
whitewash: gwyngalchu

white
white: adj.sint. gwen

wholesaler
wholesaler: n. cyfanwerthwr

wholesale
wholesale: cyfanwerthu

wholesome
wholesome: adj. iachus

whole
whole: n. cydol, whole: n. cyfan, whole: adj. cyfain, whole: adj. cyfan

whore
whore: benyweta, whore: hwrio, whore: puteinio

wide
wide: adj.sint. llydan

widget
widget: n. celfigyn

widowed
widowed: adj. gweddw

widowhood
widowhood: n. gweddwdod

widow
widow: gweddwhau

width
width: n. lled

wife
wife: n. gwraig

wildcard
wildcard: n. nodchwilydd

wilderness
wilderness: n. anialwch, wilderness: n. diffeithwch

wild
wild: adj.sint. gwyllt

will
will: n. ewyllys, will: ewyllysio, will: ewyllysu

window
window: n. ffenest, window: n. ffenestr

wind
wind: n. gwynt, wind: cenglu, wind: dirwynu, wind: weindio

wine
wine: n. gwin

wing
wing: n. aden, wing: n. asgell, wing: n. adain

wink
wink: amrantu, wink: chwincio, wink: wincian, wink: wincio

winner
winner: n. enillydd

winning
winning: n. ennill

winter
winter: n. gaeaf, winter: gaeafu

win
win: ennill

wireless
wireless: adj. diwifr

wire
wire: n. gwifren, wire: gwifrio, wire: weirio, wire: weiro

wise
wise: adj.sint. doeth

wish to
wish to: dymuno

wish
wish: n. dymuniad

withdraw
withdraw: ymneilltuo

wither
wither: celffeinio, wither: crino, wither: gywyo

withhold unjustly
withhold unjustly: camatal

without
without: pr. heb

withstand
withstand: gwrthsefyll

with the exception of
with the exception of: pr. ac eithrio

with
with: pr. gyda

witness
witness: n. tyst

wizard
wizard: n. dewin

womanise
womanise: mercheta

woman
woman: n. menyw

wonderful
wonderful: adj. aruthrol, wonderful: adj. bendigedig, wonderful: adj. rhyfeddol

wonder
wonder: rhyfeddu

woodland
woodland: n. coetir

wood
wood: n. pren

wording
wording: n. geiriad

word
word: n. gair

worker
worker: n. gweithiwr

workforce
workforce: n. gweithlu

working party
working party: n. gweithgor

work jointly
work jointly: cydlafurio

workplan
workplan: n. gweithdrefn

worksheet
worksheet: n. gweithlen

workshop
workshop: n. gweithdy

workspace
workspace: n. gweithle

work together
work together: cydweithio

work
work: n. gwaith, work: gweithio

worldwide
worldwide: adj. byd-eang

world
world: n. byd

worry
worry: n. pryder, worry: gofidio, worry: poeni, worry: pryderu

worship idols
worship idols: eilunaddoli

worship
worship: addoli, worship: crefyddu

wound
wound: n. anaf, wound: archolli, wound: clwyfo

wrangle
wrangle: caentach

wrap-around
wrap-around: n. amlap

wrap around
wrap around: amlapio

wrap
wrap: lapio

wrench
wrench: tyndroi

wrestle
wrestle: ymgodymu

wretched
wretched: adj. truenus

wriggle
wriggle: swalpio

wrinkle
wrinkle: crychio, wrinkle: crychu

write a memoir
write a memoir: cofiannu

write poetry
write poetry: barddoni

writer
writer: n. ysgrifennwr

write
write: sgrifennu, write: sgwennu, write: ysgrifennu

writhe
writhe: gwingo

writing
writing: n. ysgrif, writing: n. ysgrifen

written
written: adj. ysgrifenedig, written: adj. ysgrifenedig

wrongdoing
wrongdoing: n. drygioni

wrong
wrong: drygu

yard
yard: n. llath, yard: n. llathen

yawn
yawn: cegrythu, yawn: ymagor

yearn
yearn: ymawyddu

year
year: n. blwydd, year: n. blwyddyn

yeast
yeast: n. burum

yellow
yellow: adj.sint. melyn, yellow: melynu

yield
yield: ildio

yoke
yoke: n. iau, yoke: cyfieuo, yoke: ieuo

young man
young man: n. llanc

young
young: adj.sint. ifanc

your
your: det.pos. dy, your: det.pos. eich, your: adj. dy

youth
youth: n. glasoed, youth: n. ieuenctid

zero
zero: n. sero, zero: n. dim

zigzag
zigzag: igamogamu

zombie
zombie: n. sombi

zone
zone: n. cylchfa

zoology
zoology: n. milofyddiaeth

zoo
zoo: n. sw