- ïodad ... o sêl
- o waith cowper ... oatmeal
- obbe ... obit
- obitual ... oblongatal
- oblongish ... observative
- observator ... obtestation
- obtested ... occident
- occidental ... ochr
- ochr ... octaroon
- octastyle ... octuple
- octyl ... odometrous
- odometry ... oedd
- oedd ... oeraidd
- oeraidd ... offeiriad
- offeiriad ... ofid
- ofidus ... oglio
- ogof ... olchi
- oldish ... oliganthous
- oligarch ... olwyn
- olwyn bwli ... omniferous
- omnific ... onagga
- onagraceous ... onomancy
- onomantic ... oomiak
- oones ... openbill
- openwork ... ophiurida
- ophiurioid ... opisthoglypha
- opisthography ... opsonation
- optable ... orangeman
- orangeroot ... orchesography
- orchester ... ordovian
- ordure ... organizability
- organizable ... orientalist
- orientality ... ornamented
- ornamenter ... orpin
- orpine ... orthometric
- orthometry ... oryctology
- oryx ... osgoi
- osgoi ... osphradium
- ospray ... osteocope
- osteocranium ... ostracized
- ostracizing ... otology
- otoman ... outbidden
- outbidder ... outfeast
- outfeat ... outlinear
- outliver ... outring
- outrival ... outstrike
- outsuffer ... ovarial
- ovariole ... overcloud
- overcloy ... overflux
- overflying ... overhigh
- overhighly ... overlooker
- overloop ... overpeople
- overperch ... overroast
- overruler ... overstore
- overstrain ... overwatch
- overwax ... ovula
- ovular ... oxanilic
- oxanilide ... oxycaproic
- oxychloric ... ozonation
- ozonic ... ozonous
Dictionary
Welsh - English