 English - Welsh  Dictionary
oak - derw
oak tree - derwen
oak trees - deri
oar - rhwyf
oath - llw
obedient - ufudd
obey - ufuddhau
object - diben
objectives - nodau
objector - gwrthwynebydd
obligation - rhwymedigaeth, dyled
oblige - gorfodi i
obliged to - dyledus
oblivion - angof
observant - craff
obvious - amlwg, eglur
obviously - yn amlwg
occasions - achlysuron
October - Hydref
odd - rhyfedd
of course - wrth gwrs, wrth reswm
of every kind - o bob math
of importance - o bwys
of no importance - o ddim pwys
of noble lineage - ucheldras
of spring - gwanwynol
off we go - i ffwrdd � ni
Offa's Dyke - Clawdd Offa
offend - tarfu
offer - cynnig, taclau
offer to do - osio
office - swyddfa
official - swyddogol, swyddog
offspring - epil
often - yn aml
oil - olew
OK - gweddol
old - hen
old-womanish - gwrachiaidd
old age - henoed, henaint
old man - henwr
old mansion - henllys
oldness - hender
omit - hepgor
on - ar, ymlaen
on any account - ar unrhyw gyfrif
on average - ar gyfartal
on both sides - o'r ddeutu
on his oath - ar ei lw
on the borders - ar gyrion, ar gyrion
on the edge of - ar fin
on the outskirts of - ar gyrion
on the point of - ar fin
on the point of starving - ar newynu
on top of - ar ben
once - unwaith, ar unwaith
once in a while - bob hyn a hyn
one - un
one hundred and ten - can a deg
one needs - rhaid wrth
one to the other - y naill wrth y llall
only - unig, dim ond, yn unig
open - agor, agored
open wide - led y pen
opinion - barn, cyfrif
opportunities - cyfleusterau
opportunity - cyfle
opposite - gyferbyn �
opposition - gwrthwynebiad
opposition party - gwrthblaid
oppressive - llethol
or - neu
or not - ai peidio
or whether - ynteu
orange - oren
ordained - actiedig
order - trefnu, trefn, cywair, gorchymyn, ordro
orderly - trefnus
ordinary - cyffredin
organ - ermyg
organise - cyfundrefnu
organised - trefnus
originality - gwreddioldeb
other - arall
otherwise - fel arall
our - ein
out of sight - o'r golwg
outlaw - herwr
outline - amlinellu
outside - tu allan, allan, tu fas
outside half - maswr
outskirts - ffiniau
oven - ffwrn, pobty
over - dros, drossodd
over there - acw
overalls - ofyr�ls
overcome - trechu
overseas - tramor
owl - tylluan
own - perchenogi
owner - perchennog, perchen
ox - bustach, ych
oyster - llymarch
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This dictionary is dedicated to the memory of Emrys Rees of Carmarthen (1918 - 2006).
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