9 letters
- oogoniums16
- oolachans16
- oologists12
- oompahing20
- oospheres14
- opacified19
- opacifies18
- opacities15
- opalesced17
- opalesces16
- openworks20
- operagoer14
- operantly16
- operatics15
- operating15
- operation13
- operative16
- operators12
- operceles16
- opercular17
- opercules17
- operculum21
- operettas12
- operosely15
- ophidians16
- ophiuroid16
- opinioned15
- opiumisms19
- oppilated17
- oppilates16
- opponents17
- opportune17
- opposable19
- opposites15
- oppressed16
- oppresses15
- oppressor15
- oppugners19
- oppugning22
- opsonized23
- opsonizes22
- optatives16
- optically19
- opticians16
- opticists15
- optimally19
- optimised16
- optimises15
- optimisms18
- optimists15
- optimized25
- optimizer24
- optimizes24
- optionals14
- optionees13
- optioning16
- optometry17
- opulences18
- opulently18
- opuscules18
- opusculum22
- oralities10
- orangeade13
- orangerie12
- orangiest12
- orangutan14
- oratories9
- oratorios9
- oratrices12
- orbicular17
- orchestra14
- ordainers11
- ordaining14
- orderable14
- orderless11
- orderlies11
- ordinance15
- ordinands13
- ordinates11
- ordnances15
- organdies13
- organelle14
- organised13
- organiser12
- organises12
- organisms15
- organists12
- organized22
- organizer21
- organizes21
- organzine22
- orgiastic14
- oribatids13
- orientals11
- orientate10
- orienteer10
- orienting13
- orificial16
- oriflamme19
- origanums16
- originals13
- originate12
- orinasals11
- ornaments14
- orneriest10
- ornithine13
- orogenies12
- orography18
- orologies12
- orometers12
- orphanage17
- orphaning18
- orpiments16
- orrisroot9
- orthicons15
- orthodoxy21
- orthoepic17
- orthotics14
- orthotist11
- oscillate14
- osculated15
- osculates14
- osmeteria12
- osmometer15
- osmometry17
- osnaburgs16
- ossicular14
- ossifiers12
- ossifrage14
- ossifying17
- ossuaries10
- ostensive14
- osteocyte14
- osteology14
- osteomata12
- osteopath14
- ostiaries9
- ostinatos10
- ostosises9
- ostracise12
- ostracism15
- ostracize21
- ostracode13
- ostracods13
- ostriches14
- otherness12
- otherwise14
- otocystic17
- otolithic15
- otologies12
- otoscopes15
- oubliette14
- ouistitis10
- ourselves15
- outacting16
- outadding15
- outargued14
- outargues13
- outasking17
- outbaking20
- outbarked18
- outbawled18
- outbeamed17
- outbegged18
- outbidden16
- outblazed24
- outblazes23
- outbleats14
- outblooms17
- outbluffs21
- outboards14
- outboasts13
- outbought18
- outboxing23
- outbraved18
- outbraves17
- outbrawls17
- outbreaks17
- outbreeds14
- outbribed17
- outbribes16
- outbuilds16
- outbulked20
- outburned16
- outbursts14
- outbuying19
- outcapers16
- outcastes13
- outcaught18
- outcavils18
- outcharge17
- outcharms18
- outcheats15
- outchided17
- outchides16
- outclimbs20
- outcooked18
- outcounts15
- outcrawls17
- outcrowed17