10-letter words starting with O
There are 791 ten-letter words starting with O in our dictionary. The most common are OBJECTIVES, OBLIGATION, OCCASIONAL, OCCUPATION and OFFICIALLY.
Every word here is exactly 10 letters long and begins with O. Handy when you know the first letters and the length, as in crosswords and Wordle-style puzzles.
10-letter words starting with O
- objectives24
- obligation13
- occasional14
- occupation16
- officially21
- operations12
- opposition14
- originally14
- objections21
- obligatory16
- observable17
- observance17
- obstetrics14
- obtainable14
- occurrence16
- oftentimes15
- operatives15
- oppression14
- oppressive17
- optimistic16
- optimizing24
- orchestral15
- ordinances13
- ordinarily14
- ordination11
- organisers11
- organising12
- organizers20
- organizing21
- originated12
- originates11
- ornamental12
- orthopedic18
- ostensibly15
- outfielder14
- outlandish14
- outpatient12
- outperform17
- outrageous11
- overcoming18
- overloaded15
- overlooked18
- overpriced18
- overriding15
- overseeing14
- overtaking18
- overthrown19
- overturned14
- overweight20
- overworked21
- obediently16
- obfuscated18
- obfuscates17
- obituaries12
- obligating14
- obligingly17
- obliterate12
- obsequious21
- obsessions12
- obsessives15
- obstructed15
- obtuseness12
- occasioned15
- occidental15
- occlusions14
- occultists14
- oceanfront15
- oceangoing14
- octahedral16
- octahedron16
- oculomotor14
- oddsmakers18
- oesophagus16
- offensives19
- officiated19
- officiates18
- offloading18
- offsetting17
- offsprings19
- oleaginous11
- oligarchic18
- oligomeric15
- olivaceous15
- omnipotent14
- omniscient14
- omnivorous15
- oncologist13
- onslaughts14
- ontologies11
- opalescent14
- opaqueness21
- ophthalmic22
- oppositely17
- oppressing15
- oppressors14
- opprobrium18
- optimality17
- optimising15
- optimizers23
- optionally15
- optometric16
- orangutans11
- oratorical12
- orchestras15
- ordinaries11
- ordonnance13
- organelles11
- organismal13
- organismic15
- orientated11
- originator11
- ornamented13
- orographic18
- oropharynx25
- orphanages16
- orthogonal14
- orthoptera15
- oscillated13
- oscillates12
- oscillator12
- osmolality15
- osmolarity15
- ostensible12
- osteoblast12
- osteoclast12
- osteogenic13
- osteopaths15
- osteopathy18
- ostracised13
- ostracized22
- otherworld17
- outbidding15
- outclassed13
- outcompete16
- outfitters13
- outfitting14
- outflanked18
- outgassing12
- outgrowing15
- outgrowths17
- outlanders11
- outlasting11
- outmatched18
- outnumbers14
- outplaying16
- outpointed13
- outpouring13
- outputting13
- outranking15
- outriggers12
- outrightly17
- outrunning11
- outscoring13
- outselling11
- outshining14
- outsmarted13
- outstation10
- outweighed18
- outwitting14
- outworking18
- overacting16
- overactive18
- overbooked20
- overbought19
- overburden16
- overcharge19
- overcooked20
- overdosage15
- overdosing15
- overdrafts17
- overdriven17
- overdubbed19
- overeaters13
- overeating14
- overextend21
- overfilled17
- overfished20
- overflight20
- overflowed20
- overflying20
- overgrowth20
- overhauled17
- overheated17
- overlapped18
- overlaying17
- overnights17
- overpasses15
- overpaying19
- overplayed19
- overpowers18
- overrating14
- overreacts15
- overridden15
- overruling14
- overshadow20
- overshoots16
- oversights17
- overspread16
- overstated14
- overstates13
- overstayed17
- oversupply20
- overthrows19
- overtopped18
- overvalued17
- overwhelms21
- overwinter16
- overwrites16
- ovipositor15
- ownerships18
- oxidations18
- oxygenated22
- oxygenates21
- oxymoronic24
- oafishness16
- oasthouses13
- obbligatos15
- obduracies15
- obdurately16
- obediences15
- obeisances14
- obeisantly15
- obituarist12
- objectless21
- objurgated21
- objurgates20
- oblateness12
- obligately16
- obnubilate14
- obscurants14
- observably20
- observants15
- obsolesced15
- obsolesces14
- obsoletely15
- obsoleting13
- obstructor14
- obtainment14
- obtrusions12
- obturating13
- obturation12
- obturators12
- obtusities12
- obviations15
- occipitals16
- occultisms16
- occurrents14
- oceanarium14
- oceanology16
- ochlocracy22
- ochlocrats17
- octameters14
- octarchies17
- octillions12
- octonaries12
- octoploids15
- octothorps17
- ocularists12
- odalisques20
- odiousness11
- odometries13
- oecologies13
- oenologies11
- oenophiles15
- officering19
- officiants18
- offishness19
- offprinted19
- oilinesses10
- oinologies11
- oldfangled16
- olecranons12
- oleographs16
- oleoresins10
- olfactions15
- oligoclase13
- oligophagy20
- oligopsony16
- olivenites13
- olivinitic15
- ololiuquis19
- ommatidial15
- ommatidium17
- omnificent17
- omniranges13
- omophagies18
- oncologies13
- onionskins14
- onomastics14
- ontogenies11
- ontologist11
- oozinesses19
- opacifying21
- opalescing15
- openhanded17
- opennesses12
- operagoers13
- operagoing14
- operculars14
- operculate14
10-letter words starting with O…
Other lengths starting with O
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