-logy	-leg
A-bomb	(Bom Atomig)
Aberystwyth	Aberystwyth
Afghanistan	Affganistan
Afrikaans	Affricaneg
Alan	Alawn, Alun
Albania	Albania (f)
Alexander	Alec
Algeria	Algeria
Alps	Alpau, Yr Alpau
American bison	bual
Andorra	Andorra
Anglesey	Ynys Môn
Ankara	Ankara
April	Ebrill (m)
Argentina	yr Ariannin (f)
Armenia	Armenia
August	Awst (m)
Australia	Awstralia
Austria	Awstria (f)
Azerbaijan	Aserbaijan, Azerbaijan
Bachelor of Arts	Baglor yn y Celfyddydau
Bahrain	Bahrain
Balearic Islands	Ynysoedd Balearig
Bank of England	Banc Lloegr
Beijing	Beijing
Belarusian	Belarwsiyn
Belorussian	Belarwsiyn
Berlin	Berlin (f)
Bethlehem	Bethlehem
Black Sea	Môr Du
Brazil	Brasil
Brecknockshire	Sir Frycheiniog (f)
Brecon	Aberhonddu
Breton	Llydaweg
Bristol	Bryste (f)
Briton	Brython
Brittany	Llydaw
Bronze Age	Yr Oes Efydd
Brussels	Brwsel
Bulgarian	Bwlgaraidd
Caernarfonshire	Sir Gaernarfon
Caerphilly	Caerffili
Camelus dromedarius	camel
Cardiff	Caerdydd
Cardiganshire	Ceredigion, Sir Aberteifi (f)
Carmarthenshire	Sir Gaerfyrddin (1, 2) (f)
Catalan	Catalaneg
China	Tsieina
Chinese	Tsieineeg, Tseineg
Christ	Crist, Iesu Grist (( = Jesus Christ))
Christmas	Nadolig
Christmas tree	coeden Nadolig
Christopher	Cristoffer
Coca-Cola	Coca-Cola
Cornish	Cernyweg
Cornwall	Cernyw
Croatian	Croataidd
Czech	Tsieceg
Czech Republic	Y Weriniaeth Tsiec
Daniel	Deiniol
Danish	Daneg
Danube	Afon Donwy
David	Dafydd
December	Rhagfyr (m)
Denmark	Denmarc (f)
Devon	Dyfnaint
Dutch	iseldireg
Earth	y Ddaear
Egypt	Yr Aifft
England	Lloegr (f)
English	saesneg
European bison	ych gwyllt
Faroese	Ffaroes
February	Chwefror
Flanders	Fflandrys
France	Ffrainc (f)
French	Ffrangeg
Friday	dydd Gwener (m)
Geoffrey	Sieffre
George	Siôrs, Siôr, Siors, Siorys
German	Almaeneg
Germany	Yr Almaen (f)
Glamorgan	Morgannwg
Glamorganshire	Sir Forgannwg (f)
God	Duw (m)
Great Britain	Prydain Fawr
Great Lakes	Llynnoedd Mawr
Greece	Groeg (f)
Greek	Groeg
Gryffindor	Llereurol
Gujarati	Gwjarati
Guy Fawkes night	Noson Guto Ffowc
Happy New Year	blwyddyn newydd dda
Henry	Harri
Hindi	hindi
Hufflepuff	Wfftitwff
Hungary	Hwngari
I don't know	wn i ddim something), 'dw i ddim yn nabod somebody)
I love you	'Rwy'n dy garu di, Yr wyf i yn dy garu di, Yr wyf i yn dy garu di chwi
Iceland	Gwlad yr Iâ
Indonesia	Indonesia
Internet	Rhyngrwyd
Ireland	Iwerddon (f)
Iron Age	Yr Oes Haearn
Isle of Man	Ynys Manaw
Italian	Eidaleg
Italy	yr Eidal (f)
James	Iago
January	Ionawr (f)
Jerusalem	Jeriwsalem
Jesus	Iesu
Jewish	Iddewaidd
John	Ioan, Ieuan, Siôn
July	Gorffennaf (m)
June	Mehefin (m)
Jupiter	Iau (m)
Jupiter	Iau (m)
Justin	Iestyn
Kazakhstan	Casacstan
Latin	Lladin
Latvia	Latfia
Lithuania	Lithwania
London	Llundain (f)
Malay	Malai
Manx	Manaweg
March	Mawrth (m)
Mars	Mawrth
Mars	Mawrth
Mary	Mair
May	Mai (m)
Mercury	Mercher (m)
Mercury	Mercher (m)
Merry Christmas	Nadolig Llawen
Merry Christmas and a Happy New Year!	Nadolig llawen a blwyddyn newydd dda
Merthyr Tydfil	Merthyr Tudful
Michael	Meical
Michael	Mihangel
Middle East	Dwyrain Canol
Monday	dydd Llun (m)
Monmouthshire	Sir Fynwy (f)
Montgomeryshire	Sir Drefaldwyn (f)
Moscow	Moskva (f)
Muslim	Mwslim (n), Mwslimaidd (a)
NB	DS
NUS	UCM
Neptune	Neifion
Netherlands	Yr Iseldiroedd
New Jersey	New Jersey
New York	Dinas Efrog Newydd
New York City	Dinas Efrog Newydd
New Zealand	Seland Newydd
Newport	Casnewydd
North Sea	Môr y Gogledd
November	Tachwedd (m)
Occitan	Ocitan
October	Hydref
Oxford	Rhydychen
Pembroke	Penfro
Pembrokeshire	Sir Benfro (f)
Pisces	Pysgod
Poland	Gwlad Pwyl
Polish	Pwyleg
Portugal	Portwgal (f)
Portuguese	Portiwgaleg
Portuguese	Portiwgaleg
President of the United States	Arlywydd Unol Daleithiau America
Punjabi	Pwnjabi
Pythagoras	Pythagoras
Quechua	Cetshwa
Radnorshire	Sir Faesyfed
Ravenclaw	Crafangfran
Roman	Ymerodraeth
Roman Empire	Yr Ymerodraeth Rufeinig
Romania	Rwmania (f)
Russia	Rwsia (f)
Russian	Rwsieg
Russian Federation	Ffederasiwn Rwsia
Santa Claus	Siôn Corn
Saturday	dydd Sadwrn (m)
Saturn	Sadwrn
Scotland	yr Alban (f)
September	Medi (m)
Severn	Hafran
Shrewsbury	Amwythig
Slytherin	Slafennog
Snowdon	Yr Wyddfa
Snowdonia	Eryri
Soviet Union	Undeb Sofietaidd
Spain	Sbaen (f)
Sudan	Swdan, Siwdan
Sunday	Dydd Sul
Swansea	Abertawe
Template:program-programme-noun	rhaglen "b"
Thai	Tai
Thailand	Gwlad Thai
Thames	Afon Tafwys
Thomas	Tomos
Thursday	dydd Iau (m)
Tuesday	dydd Mawrth (m)
Turkmenistan	Twrcmenistan
Ukraine	Wcráin
Ukrainian	Iwcranaidd
United Kingdom	Y Deyrnas Unigol
Uranus	Wranws
Uranus	Wranws
Venus	Gwener "f'
Wales	Cymru (f)
Wednesday	dydd Mercher
Welsh	Cymraeg; "mutations:" Gymraeg
Welsh	Cymreig. Inhabitants: Cymro (m), Cymraes (f), Cymry (p)
Welsh yard	llath
Welshman	Cymro
Welshwoman	Cymraes
Wenglish	"'Wenglish"'
Western Sahara	Gorllewin Sahara
Wikipedia	wicipedia
Wiktionary	Wiciadur
Wiktionary	Wiciadur
Wiktionary:Beer parlour archive/August 06	ceffyl
Wrexham	Wrecsam
abase	darostwng, iselhau
abasement	darostyngiad (m), iselhad (m)
abbot	abad (m)
abduct	cipio
abhor	сashau
ability	gallu
abortion	erthylu "c"
abroad	tramor
admiration	edmygedd
age	yr
agree	cytuno
al-Qaeda	Al-Qaeda
aluminium	alwminiwm
aluminum	alwminiwm
ampersand	ampersand
and	a, ac "(before vowels)"
animal	mil (m)
answer	ateb
antimony	antimoni
antonym	gwrthwynebair
apple	afal
apple	coeden afalau, (lit.)afallen
apple tree	coeden afalau, (lit.) afallen
architecture	pensaernïaeth
argent	arian
argon	argon
ashtray	plat lludw
ask	gofyn, holi, ceisio
ask	gofyn, holi, ceisio
ass	tin (f)
asterisk	seren (f)
autumn	hydref
babysitter	gwarchodwr banbanod
badger	mochyn daear (m)
baker	pobydd
banjo	banjô
barley	haidd, barlys Welsh)
barn owl	tylluan wen
basin	basn, cawg, chawg, ddysgl, fail, fasn, gawg, mail, masn, nghawg, nysgl
basket	basged
bat	bat (m) (f)
bat	ystlum (m)
bayonet	bidog Welsh)
beach	traeth (m) -au (pl)
bear	arth
beaver	afanc, llostlydan
bed	gwely
beer	cwrw
beer	cwrw
behind	tu cefn
beryllium	berilliwm
bible	Beibl
bicycle	beic (m)
big	mawr
bird	aderyn (m)
birds of a feather flock together	adar o'r unlliw hedant i'r unlle
bitch	gast
black grouse	grugiar ddu
black woodpecker	cnocell ddu, coblyn du
blackbird	mwyalchen
blond	penfelyn
blue	glas
blue	glas
boat	cwch, bad (m)
bone	asgwrn (f)
bone	asgwrn (f)
bone	blew pysgodyn (npl)
book	llyfr
boron	boron
bovine spongiform encephalopathy	Enseffalopathi Sbyngffurf Buchol, Ymenyddglwyf Sbungfurff Gwartheg, Clefyd y Gwartheg Gwallgof
boy	bachgen (m)
brain	ymennydd
bread	bara (m)
breakfast	brecwast Welsh)
bridge	pont
broad	llydan
broadcast	darlledu
buffalo	byfflo
butterfly	(coll.) pili-pala, (standard name) iâr fach yr haf, glöyn byw
button	botum
buzzard	bwncath
cabbage	bresych(en)
cabbage	bresych(en)
calcium	calsiwm
camel	camel Welsh)
camouflage	cuddliw
cancer	cancr
canoe	ceufad, canŵ
capercaillie	grugiar y coed
car	car, modur
car	cerbyd
car	cerbyd, car
car park	parciau cehr
cardigan	Aberteifi
carpenter	saer coed (m)
carpet	carped (m)
castle	caer (f), castell (m)
castle	castell (m)
celebrate	dathlu
cemetery	mynwent Welsh)
cerium	ceriwm
chamois	gafrewig
chapel	betws (m), capel (m)
cheers	iechyd da
cheese	caws (m)
chess	gwyddbwyll (f)
chicken	cyw, iâr, cyw iâr
chimpanzee	tsimpansî
choir	côr
chord	cord
chromium	cromiwm
church	eglwys (f), llan (f)
cigarette	sigarét, sigaret
city	caer (f), dinas (f)
clarinet	clarinét
claw	crafanc, ewin
climb	dringo
cloud	cwmwl (m)
cloud	cymylu
coal	glo (m)
cobalt	cobalt
coffee	coffi
cold	anghynnes, oeraidd
cold	annwyd
cold	oer
cold	oerfel
common gull	y gweunydd
communism	comiwnyddiaeth
computer	cyfrifiadur
computer science	cyfrifiadureg (f)
concept	syniad (m)
condemn	condemnio
corgi	corgi (m)
corrie	cwm
county	sir (f)
crab	cranc
creator	crëwr
crow	brân (f)
cruel	annynol
curlew	gylfinir (m)
daffodil	cenhinen Bedr (f)
damage	difrod
darkness	tywyllwch
day	dydd
decision	dyfarniad
deer	carw
definition	diffiniad (m)
dentist	deintydd
desert	anialwch, diffeithdir
deuterium	dewteriwm
devil	diafol, (in curses) diawl
diarrhea	dolur rhydd (m)
diary	dyddiadur
dictionary	geiriadur
difficult	anodd
dinosaur	deinosor
discussion	trafodaeth
disease	clefyd, afiechyd
dobra	dobra
dog	ci
donation	cyfraniad
donkey	asyn
dormouse	pathew
dragon	draig (f)
dromedary	camel rhedeg
duck	hwyad (f), hwyaden (f)
eagle	eryr
eagle owl	tylluan fawr, tylluan eryraidd
early	cynnar
earth	daear (f)
eco-	eco-
ecology	ecoleg
egg	wy
eight	wyth
eighteen	deunaw "(vigesimal, traditional)", un deg wyth "(decimal)"
eighth	wythfed ("abbreviation" 8ed)
eighty	pedwar ugain "vigesimal, traditional", wyth deg "decimal"
electricity	trydan
elephant	eliffant
eleven	unarddeg "vigesimal, traditional", un deg un "decimal"
eleven hundred	cant a mil
eleventh	unfed ar ddeg ("abbreviation" 11ed)
empire	Ymerodraeth
ermine	carlwm
eternity	byth (m.)
eukaryote	ewcaryot
euro	ewro (m)
evening	noswaith, hwyr, noson (occasion)
every	pob
everything	popeth
execution	dienyddiad
expedition	alldaith
exploit	gweithio
eye	llygad
face	wyneb
falcon	hebog
fallow deer	danas
fast food	prydau parod
fat	tew
father	tad
feast	gŵyl (f)
feel	feel
feeling	teimlad (m)
feeling	teimlad (m)
feeling	teimlad, greddf
feeling	teimladau
feeling	teimladau
ferret	ffured
fever	twymyn
fifteen	pymtheg ("vigesimal, traditional"), un deg pump ("decimal")
fifth	pumed ("abbreviation" 5ed)
fifty	hanner cant "vigesimal, traditional", pum deg "decimal"
final	terfynol, olaf
fir	ffynidwydden
fire	diswyddo
fire	saethu, tanio
fire	saethu, tanio
fire	stof
fire	tanio
fire	tân
fire	tân
fire	tân
fire	tân (m)
fire exit	allanfa dan
first	cyntaf ("abbreviation:" 1af)
fish	pysgod
five	pump
five hundred	pum cant
flower	blodyn (m)
fluent	rhugl
foreign	tramor
fortress	caer (f)
forty	deugain "vigesimal, traditional", pedwar deg "decimal"
fourteen	pedwar ar ddeg "m (vigesimal, traditional)", pedair ar ddeg "f (vigesimal)", un deg pedwar "(decimal)"
fourth	pedwaredd ("abbreviation" 4edd), pedwerydd ("abbreviation" 4ydd)
fowl	dofedn, ffowlyn, ffowl
fox	cadno, llwynog
francium	ffransiwm
frog	broga, llyffant
fuck	ffwcio, ffwrcho, cnuchio
fuel	tanwydd (m)
full	llawn
gay	hoyw
gay	siriol, llawen
gay	siriol, llawen
geography	daearyddiaeth
ghost	ysbryd (m)
girl	bachgennes (f), geneth (f)
glacier	rhewlif
goblin	coblyn
god	duw
gold	aur (m)
golden eagle	eryr euraid
good	da (m), daioni (m)
good morning	bore da
good night	nos da
goods	nwydd (m)
goose	gwÿdd
goshawk	gwalch marthin
gospel	efengyl (f)
graveyard	claddfa
great spotted woodpecker	cnocell fraith fwyaf
great tit	titw mawr
green	glas
green	gwyrdd
green	gwyrdd, gwyrddlas
green woodpecker	cnocell werdd
grey	llwyd
greylag goose	gwÿdd wyllt
griffon vulture	fwltur, fultur
guilt	euogrwydd
guinea fowl	iâr gini, combác, cochwat
guinea pig	mochyn cwta
gull	gwylan
hafnium	haffniwm
hamburger	byrger
hamster	bochdew
hand	llaw (f)
happy birthday	penblwydd hapus
harbour	harbwr Welsh)
hare	ysgyfarnog (f), sgwarnog (f)
hate	casáu
hatred	casineb Welsh)
hazelnut	cneuen gyll (f)
head	pen (m)
head	pen (m)
heart	calon
heather	grug
heavy	trwm
hedgehog	draenog
helium	heliwm
hello	helo
here	yma
here	yma, hyd yma
hero	arwr, gwron
heron	crëyr
hippopotamus	afonfarch, hipopotamws
history	astudiaeth
history	hanes
history	hanes
history	hanes (meddygol)
holly	celyn, celynen
holmium	holmiwm
honey	mêl
horizon	gorwel
horse	ceffyl
hospital	ysbyty (m)
hotchpotch	cybolfa (f)
hour	awr (f)
house	annedd (mf)
how are you	Sut wyt ti? - informal, Sut 'dach chi? - formal
hullabaloo	halibalŵ
hundred	cant
hurricane	gyrwynt (m), corwynt (m)
hussar	hwsâr
ibex	alpafr
iceberg	eisberg, mynydd iâ
illness	salwch
inch	modfedd
index	dangoseg, ddangoseg, fynegai, mynegai, nangoseg
influenza	ffliw
injure	niweidio; anafu
injury	sarhad
insanity	gorffwylltra
iridium	iridiwm
iron	haearn
ivy	eiddew, iorwg
jewel	gem, tlws (m)
job	swydd ?
king	brenin (m)
king	brenin (m)
kitten	cath fach (f)
knee	glin
krypton	krupton
ladybird	buwch goch gota (f)
ladybug	buwch goch gota (f)
language	iaith (f)
large	braisg, mawr
lark	ehedydd
lather	seboni, trochioni; golchi
lather	trochion
laugh	chwerthin
lawrencium	lawrenciwm
lead	plwm
lead/experiment	plwm
least weasel	bronwen, gwenci
leave	caniatad
leave	caniatau, gadael
leave	gadael
leave	gadael
leave	gadael
leave	gadael
leave	gadawiad
leave	seibiant, gwyliau
leek	cenhinen (f)
lenition	treiglad ➠
lesser spotted woodpecker	cnocell fraith leiaf
lesson	gwers
lexical	geiriadurol
library	llyfrgell
light	cynnau
light	disylw, dibwys, ysgafn
light	golau
light	golau
light	golau, goleuni
light	golau, goleuni
light	goleuo
light	ysgafn
light	ysgafn
limestone	calchfaen
lion	llew
lip	gwefus (f), min (m)
literature	llên
lithium	lithiwm
litre	litr
little	bach, bychan
little owl	tylluan fach
lizard	madfall
long-eared owl	tylluan gorniog
love	cariad
love	cariad (m)
love	caru
love	caru â
love	dwli ar
love	serch (m)
lukewarm	llugoer
lynx	lyncs
mallard	hwyaden wyllt
man	dyn (m)
manganese	manganîs
mare	caseg (f)
market	marchnad (f)
massacre	llofruddiaeth
mathematics	mathemateg
meat	cig
meet	cwrdd (â)
meet	cwrdd (â)
meet	cwrdd (â), cyfarfod (â)
meet	cwrdd (â, cyfarfod (â)
meeting	cyfarfod
mercury	mercwri
middle	canol
mild	mwyn
mile	milltir
million	miliwn
mine	cloddfa (f)
minute	munud
miracle	gwyrth
misnomer	camenw
mistletoe	uchelwydd
mole	gwahadden; twrch daear Welsh)
molybdenum	molybdenwm
money	arian (m)
month	mis
moon	lleuad, lloer
moon	lleuad, lloer
morality	moes
morning	bore
morpheme	morffem
moss	mwsogl
mother	mam
mother	mam
mouflon	mwfflon
mountain	mynydd
mud	mwd
mug	mẁg
muskrat	mwsglygoden, llygoden fwsg
mustard	mwstard, cedw
mysterious	cyfriniol
mythology	mytholeg
name	enw
neodymium	neodymiwm
neon	neon
neutron	niwtron
never	byth
nickel	nicel
night	nos
nightingale	eos
nightmare	hunllef
nine	naw
nineteen	pedwar ar bymtheg "m (vigesimal, traditional)", pedair ar bymtheg "f (vigesimal)", un deg naw "(decimal)"
ninety	deg ar pedwar ugain "vigesimal, traditional", naw deg "decimal"
ninth	nawfed ("abbreviation" 9ed)
nitrogen	nitrogen
no	na (nǎ or nâ, using nazalized n; commonly used also by English speakers)
north	gogledd (m)
north	gogleddol
nut	cneuen (f.)
nut	nyten
oak	(coed) derw
oak	derwen
obedience	ufudd-dod
obey	ufuddhau
octopus	octopws, cymdeithas, nieidiol, wythgoes
olive tree	olewydden
one	un
one	un
one hundred one	cant ag un
operation	gweithrediad (m)
operation	gweithrediad (m)
operation	llawdriniaeth (f)
operation	ymgyrch
orange	oren
orange	oren
orange	oren, melyngoch
ore	mwyn (m)
organ	organ
orphan	amddifad
ostrich	estrys
otter	dyfrgi
owl	tylluan
ox	ych (m)
page	tudalen (f)
painting	darlun
pale	gwelw
pale	gwelwi
parable	dameg
partridge	petrisen
path	llwybr
peace	heddwch
peace	heddwch
peace	heddwch, llonydd, llonyddwch
peace	tawelwch (meddwl)
peanut	cneuen ddaear
people	pobl
peregrine falcon	hebog tramor
pheasant	ffesant
phoenix	ffenics (m)
phosphorus	ffósfforws
photocopier	llun-gopïwr
photosynthesis	ffotosynthesis
picture	llun
picture	llun, darlun
pig	mochyn
pigeon	colomen
pilgrimage	pererindod
pine	pinwydden (f), (pl., pinwydd, pîn) (1,2)
pink	pinc
pirate	copïwr anghyfreithlon
pirate	copïwr anghyfreithlon
pirate	môr-leidr
plague	pla
planet	planed
platinum	platinwm
please	os gwelwch yn dda
pleasure	bodd
poet	bardd (m)
poetry	barddas
polecat	ffwlbart
pomegranate	grawnafal
pope	pab
postcard	cerdyn post
potassium	potasiwm
prefix	rhagddodiaid (m)
pristine	cyntefig, gwyryfol
project	prosiect (m)
promethium	promethiwm
pronunciation	cynaniad
property	eiddo
proverb	dihareb (f)
puffin	pâl
pump	pwmp
purple	porffor, piws
quail	sofliar
quarry	cloddfa (f)
queen	brenhines
rabbit	cwningen
radiation	pelydriad (1,2,3), ymbelydredd (4)
rainbow	enfys, bwa'r Drindod, bwa'r arch
rat	llygoden mawr  Welsh)
raven	cigfran
ready	parod
red	rhudd, coch
red deer	carw coch
ride	marchogaeth (horse), mynd ar (gefn) beic, beicio (bicycle)
ride	mynd, teithio
right	reit
river	afon
road	ffordd
robin	robin goch
robot	robot (m)
rock dove	colomen y graig
rocky	creigiog
rook	castell
sail	asgell, hwyl
sail	hwyl
salmon	eog
sandwich	brechdan
satellite	lloeren (artificial), lleuad (planet's moon)
saudade	hiraeth
save	achub, arbed
save	cynilo, arbed, neilltuo
school	ysgol (f)
school	ysgol (f)
school	ysgol (f)
school	ysgol (f)
sea	mor, gweilgi
second	ail ("abbreviation" 2il)
second	amrantiad (m)
second	amrantiad (m)
secret	cyfrin, dirgel
secret	cyfrinach
see	gweld
selenium	seleniwm
serious	difrifol
serious	difrifol
serious	o ddifri'
service	gweinidogaeth
seven hundred and fifty	saith cant a hanner "vingesimal, traditional", saith cant pum deg "decimal" ("noun, adjective or both?")
seventeen	dau ar bymtheg "m (vigesimal, traditional)", dwy ar bymtheg "f (vigesimal)", un deg saith "(decimal)"
seventh	seithfed ("abbreviation" 7ed)
seventy	deg ar thrigain "vigesimal, traditional", saith deg "decimal"
sheep	dafad (f), defaid (p)
shepherd	bugail (m)
ship	llong (f)
shit	cachu
shop	siop (f)
sickle	cryman
silicon	sílicon
silver	arian
sin	pechod
sin	pechu
sing	canu
six	chwech
six	chwech
sixteen	un ar bymtheg "(vigesimal, traditional)", un deg chwech "(decimal)"
sixth	chweched ("abbreviation" 6ed)
sixty	trigain "vigesimal, traditional", chwe' deg "decimal"
skull	penglog
skylark	ehedydd
sleep	cwsg
sleep	cysgu
slow	araf
small	bach, bychan
small	bach, ieuanc
smile	gwenu
smile	gwên
smoke	mwg
smoke	mwgyn
smoke	mygu
smoke	mygu
smoke	ysmygu
smoke	ysmygu
smoke alarm	larwm mwg
snow	eira
snow	eira
snowboard	eirfwrdd
solar system	Cysawd yr Haul
solder	sodr
solution	datrys (v.), datrysiad, ateb (n.) (final solution = ) yr ateb terfynol
solution	toddiant, hydoddiant
sometimes	weithiau
sparrow	aderyn
sparrow hawk	gwalch glas
spider	corryn (m), pryf copyn (m)
spring	gwanwyn
squirrel	gwiwer
stallion	march (m)
star	seren
star	seren
star	seren
star	serennu
starling	drudwen
statement	cyfriflen
station	gorsaf
steel	dur Welsh)
stone	cerrig Welsh)
stork	ciconia
storm	storm, ystorm, tymestl
straight	uniawn
street	heol (f)
strontium	strontiwm
sulfur	sylffwr Welsh)
summer	haf
sun	haul (m)
sunflower	blodyn haul
sunset	machlud haul
sunset	machlud haul
sunset	machlud haul
surrender	ymroddi
swan	alarch
synonym	cyfystyr
system	system Welsh)
tawny owl	tylluan frech
tea	(dail) te
tea	paned, dysgled
tea	te
tea	te (m)
tea	trwyth
teenager	llefnyn
telephone	teliffon
telephone number	rhif ffôn
television	teledu (m)
television	teledu (m)
television	teledu (m), set deledu (m)
tellurium	telwriwm
ten	deg
ten	deg
tenth	degfed ("abbreviation" 10ed)
tenth	degwm (m), degymau "m.pl." (2)
thank you	diolch
the	'r, yr, y
thick	tew
thing	peth Welsh)
thing	peth Welsh)
third	trydydd ("abbreviation" 3ydd)
thirteen	tri ar ddeg "m (vigesimal, traditional)", tair ar ddeg "f (vigesimal)", un deg tri "(decimal)"
thousand	mil
three	tri (m), tair (f)
thunder	taranau, taran = 'peal of thunder', tyrfau
tiger	teigr (m)
tin	tùn
titanium	titaniwm
toad	llyffant (dafadennog)
today	heddiw
tomato	tomato
tooth	dant
tornado	gyrwynt (m)
tower	tŵr
town	tref (f)
train	gosgordd
train	trên (m)
translate	cyfieithu
translate	trosi, troi
transparent	tryloyw
treasurer	trysorydd
tree	coeden, pren, colfen "(colloquial)"
trout	brithyll
truck	lori (f)
truth	Gwir
tsunami	tsunami
tungsten	twngsten
tunnel	twnnel Welsh)
turkey	twrci
turtle dove	turtur
twelve	deuddeg "(vigesimal, traditional)", un deg dau "(decimal)"
twenty	ugain "(vigesimal, traditional)", dau ddeg "m (decimal)", dwy ddeg "f (decimal)"
twin	gefell
two	dau (m), dwy (f)
two	dau (m), dwy (f)
two thousand	dwy fil
typhoon	teiffŵn
universe	bydysawd
university	prifysgol
useful	buddiol
valley	cwm (m)
value	gwerth
verb	berf
violent	chwyrn
volcano	llosgfynydd
vole	llygoden bengron y dwÿr
volunteer	gwirfoddolwr (person); gwirfoddoli (v.)
walnut	cneuen Ffrengig (f)
war	rhyfel
water	dŵr (m)
waterfall	rhaeadr, pistyll, sgwd
we	ni, ninnau "(emphatic)"
weak	gwan
weasel	bronwen, gwenci
web	gwe
week	wythnos
welcome	croesawu
welcome	croeso!
west	gorllewin (m)
where	man
wherefore	paham
whip	chwip
whiskey	chwisgi
white	gwyn, gwen
wide	llydan
wiki	wici
wild boar	baedd gwyllt
window	ffenestr
winter	gaeaf
wisdom	callineb
wise	cymen
wisent	ych gwyllt
wolf	blaidd (m)
woman	dynes (f)
wood	coed
wood pigeon	ysguthan
wood sorrel	suran y coed
woodpecker	cnocell (cnocell y coed)
wool	gwlân
word	gair
xenon	xenon
yeah	iah (pronounced "ee-ah"), Welsh-Celtic precursor of English "yeah."
year	blwyddyn
yellow	melyn
yes	ie (ee-ya; commonly used in English, shown as "yeah")
yesterday	doe
you	chi
you	chi
you	ti ("familiar"); chi ("polite")
you're welcome	da chi I pray you)
zebra	sebra