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179 words that are 5 letters long beginning with o.

oaken oakum oared oases oasis oasts oaten oater oaths oaves obeah obeli obese obeys obias obits objet oboes obole oboli obols occur ocean ocher ochre ochry ocker ocrea octad octal octan octet octyl oculi odder oddly odeon odeum odist odium odors odour odyle odyls offal offed offer often ofter ogams ogees ogham ogive ogled ogler ogles ogres ohias ohing ohmic oidia oiled oiler oinks okapi okays okehs okras olden older oldie oleic olein oleos oleum olios olive ollas omasa omber ombre omega omens omers omits onery onion onium onset ontic oohed oomph oorie ootid oozed oozes opahs opals opens opera opine oping opium opsin opted optic orach orals orang orate orbed orbit orcas orcin order ordos oread organ orgic oribi oriel orles orlop ormer ornis orpin orris ortho orzos osier osmic osmol ossia ostia other ottar otter ottos ought ounce ouphe ouphs ourie ousel ousts outby outdo outed outer outgo outre ouzel ouzos ovals ovary ovate ovens overs overt ovine ovoid ovoli ovolo ovule owing owlet owned owner owsen oxbow oxeye oxide oxids oxime oxims oxlip oxter oyers ozone