Words Starting with O and Containing S
A list of words that start with O and contain S is here. Make the most of what you need with a perfectly-curated word list created with your specific needs in mind. Find words with S and words that start with O to expand your list some more!
| 16 letter words | 1 Word |
|---|---|
| organophosphorus | |
| 15 letter words | 6 Words |
|---|---|
| oligosaccharide | |
| opisthognathous | |
| optoelectronics | |
| organophosphate | |
| ornithorhynchus | |
| orthopsychiatry | |
| 14 letter words | 9 Words |
|---|---|
| obstructionist | |
| onchocerciasis | |
| operationalism | |
| ophthalmoscope | |
| orthomyxovirus | |
| orthophosphate | |
| osteoarthritis | |
| overcompensate | |
| oxidoreductase | |
| 13 letter words | 15 Words |
|---|---|
| observational | |
| occasionalism | |
| occidentalism | |
| odontoglossum | |
| opportunistic | |
| organogenesis | |
| organotropism | |
| ornithischian | |
| orthognathous | |
| osteomyelitis | |
| outdoorswoman | |
| overrepresent | |
| oversubscribe | |
| ovoviviparous | |
| oystercatcher | |
| 12 letter words | 24 Words |
|---|---|
| obscurantism | |
| obstetrician | |
| obstreperous | |
| occasionally | |
| octosyllabic | |
| octosyllable | |
| olfactronics | |
| oligophagous | |
| ombudsperson | |
| optoacoustic | |
| orthodontics | |
| orthogenesis | |
| orthotropism | |
| orthotropous | |
| oscillograph | |
| oscilloscope | |
| osteomalacia | |
| osteoplastic | |
| osteoporosis | |
| osteosarcoma | |
| otosclerosis | |
| overestimate | |
| overpersuade | |
| oversimplify | |
| 11 letter words | 41 Words |
|---|---|
| objectivism | |
| obscuration | |
| observation | |
| observatory | |
| obsolescent | |
| obstipation | |
| obstruction | |
| obstructive | |
| odontoblast | |
| odoriferous | |
| offenseless | |
| officialese | |
| officialism | |
| offscouring | |
| oktoberfest | |
| ombudswoman | |
| omnifarious | |
| omnipresent | |
| omniscience | |
| opportunism | |
| opprobrious | |
| optometrist | |
| orchestrate | |
| orchestrion | |
| orientalism | |
| originalism | |
| orthopedics | |
| orthoscopic | |
| orthostatic | |
| orthostichy | |
| oscillation | |
| oscillogram | |
| ostentation | |
| osteoclasis | |
| outcrossing | |
| 10 letter words | 55 Words |
|---|---|
| oberhausen | |
| obsequious | |
| observable | |
| observance | |
| obstetrics | |
| occasional | |
| octamerous | |
| oesophagus | |
| oftentimes | |
| oleaginous | |
| oligoclase | |
| oligopsony | |
| olivaceous | |
| omniscient | |
| omnivorous | |
| onomastics | |
| oophoritis | |
| opalescent | |
| opposition | |
| oppression | |
| oppressive | |
| orchardist | |
| orchestral | |
| organicism | |
| ornithosis | |
| orthoclase | |
| orthoscope | |
| oscillator | |
| osmiridium | |
| ossiferous | |
| ostensible | |
| osteoblast | |
| osteoclast | |
| osteopathy | |
| osteopenia | |
| 9 letter words | 98 Words |
|---|---|
| oarswoman | |
| obeisance | |
| obfuscate | |
| oblivious | |
| obnoxious | |
| obscenity | |
| obscurant | |
| obscurity | |
| obsecrate | |
| obsequies | |
| observant | |
| obsession | |
| obsessive | |
| obsolesce | |
| obstetric | |
| obstinacy | |
| obstinate | |
| obstruent | |
| obtrusive | |
| obversion | |
| occlusion | |
| occultism | |
| oceanside | |
| ocularist | |
| odalisque | |
| oddsmaker | |
| oestrogen | |
| offensive | |
| officious | |
| offspring | |
| ogbomosho | |
| oldcastle | |
| oleoresin | |
| ombudsman | |
| omissible | |
| 8 letter words | 81 Words |
|---|---|
| observer | |
| obsidian | |
| obsolete | |
| obstacle | |
| obstruct | |
| occasion | |
| occlusal | |
| octavius | |
| odysseus | |
| oestrous | |
| offshoot | |
| offshore | |
| offstage | |
| oilstone | |
| oistrakh | |
| oldsquaw | |
| oleaster | |
| olynthus | |
| omission | |
| omissive | |
| omphalos | |
| onstream | |
| oogamous | |
| oosphere | |
| oostende | |
| opiumism | |
| opposite | |
| opsonify | |
| opsonize | |
| optimism | |
| organism | |
| organist | |
| orgulous | |
| orinasal | |
| orthosis | |
| 7 letter words | 89 Words |
|---|---|
| oarfish | |
| oarsman | |
| obelisk | |
| obscene | |
| obscure | |
| observe | |
| obverse | |
| obvious | |
| oceanus | |
| ocellus | |
| octopus | |
| oculist | |
| odorous | |
| odyssey | |
| oedipus | |
| oersted | |
| oestrus | |
| offense | |
| offside | |
| oilseed | |
| oilskin | |
| okhotsk | |
| oldster | |
| olmsted | |
| oloroso | |
| olympus | |
| ominous | |
| omnibus | |
| onanism | |
| oneness | |
| onerous | |
| oneself | |
| onsager | |
| onshore | |
| onstage | |
| 6 letter words | 58 Words |
|---|---|
| obelus | |
| oblast | |
| obolus | |
| obsess | |
| obtest | |
| obtuse | |
| octans | |
| odense | |
| odessa | |
| odious | |
| offish | |
| offset | |
| ogress | |
| oldish | |
| olives | |
| omasum | |
| onesie | |
| onrush | |
| onside | |
| oodles | |
| oppose | |
| optics | |
| orchis | |
| orgasm | |
| orison | |
| ortles | |
| osborn | |
| oscine | |
| oshawa | |
| osiris | |
| osmics | |
| osmium | |
| osmose | |
| osmous | |
| osprey | |
| 5 letter words | 27 Words |
|---|---|
| oasis | |
| oates | |
| obese | |
| occas | |
| odets | |
| ofris | |
| onset | |
| opsin | |
| opsis | |
| orcus | |
| ornis | |
| orris | |
| orson | |
| osage | |
| osaka | |
| oscan | |
| oscar | |
| osier | |
| osity | |
| oslav | |
| osman | |
| osmic | |
| osset | |
| osteo | |
| ostia | |
| ousel | |
| owens | |
| 4 letter words | 22 Words |
|---|---|
| oast | |
| ochs | |
| ocso | |
| odds | |
| odus | |
| oise | |
| omsk | |
| onus | |
| oops | |
| opus | |
| orsk | |
| osce | |
| osha | |
| osis | |
| oslo | |
| ossa | |
| oste | |
| otis | |
| ours | |
| ouse | |
| oust | |
| oxus | |
| 3 letter words | 9 Words |
|---|---|
| oas | |
| obs | |
| ocs | |
| ops | |
| osb | |
| ose | |
| osp | |
| oss | |
| ous | |
| 2 letter words | 1 Word |
|---|---|
| os | |
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