12 Letter Words Starting with O
There are 419 12-letter English words that start with O, ranging alphabetically from OAFISHNESSES to OZONOSPHERES. Top Scrabble® scorers on this list: OBJECTIFYING (30), OZONIZATIONS (30), OVEREQUIPPED (29). The longest entry here is OAFISHNESSES at 12 letters.
Word list
O
- OAFISHNESSES18 pts
- OARSMANSHIPS19 pts
- OBDURATENESS15 pts
- OBFUSCATIONS19 pts
- OBJECTIFYING30 pts
- OBJECTIVISMS28 pts
- OBJECTIVISTS26 pts
- OBJURGATIONS22 pts
- OBLANCEOLATE16 pts
- OBLATENESSES14 pts
- OBLIGATORILY18 pts
- OBLIGINGNESS16 pts
- OBLITERATING15 pts
- OBLITERATION14 pts
- OBLITERATIVE17 pts
- OBLITERATORS14 pts
- OBNUBILATING17 pts
- OBNUBILATION16 pts
- OBSCURANTISM18 pts
- OBSCURANTIST16 pts
- OBSCURATIONS16 pts
- OBSEQUIOUSLY26 pts
- OBSERVATIONS17 pts
- OBSOLESCENCE18 pts
- OBSOLETENESS14 pts
- OBSTETRICIAN16 pts
- OBSTREPEROUS16 pts
- OBSTRUCTIONS16 pts
- OBSTRUCTIVES19 pts
- OBTUSENESSES14 pts
- OCCASIONALLY19 pts
- OCCIDENTALLY20 pts
- OCCULTATIONS16 pts
- OCCUPATIONAL18 pts
- OCEANOGRAPHY23 pts
- OCEANOLOGIES15 pts
- OCEANOLOGIST15 pts
- OCHLOCRACIES21 pts
- OCTAHEDRALLY21 pts
- OCTAPEPTIDES19 pts
- OCTOGENARIAN15 pts
- OCTOSYLLABIC21 pts
- OCTOSYLLABLE19 pts
- ODIOUSNESSES13 pts
- ODONTOBLASTS15 pts
- OFFICEHOLDER24 pts
- OFFICIALDOMS23 pts
- OFFICIALESES20 pts
- OFFICIALISMS22 pts
- OFFICIATIONS20 pts
- OFFISHNESSES21 pts
- OFFSCOURINGS21 pts
- OLEAGINOUSLY16 pts
- OLEANDOMYCIN20 pts
- OLEORESINOUS12 pts
- OLFACTOMETER19 pts
- OLIGARCHICAL20 pts
- OLIGOCHAETES18 pts
- OLIGOPHAGIES19 pts
- OLIGOPHAGOUS19 pts
- OLIGOPSONIES15 pts
- OLIGOTROPHIC20 pts
- OMNIPOTENCES18 pts
- OMNIPOTENTLY19 pts
- OMNIPRESENCE18 pts
- OMNISCIENCES18 pts
- OMNISCIENTLY19 pts
- OMNIVOROUSLY20 pts
- ONCOGENICITY20 pts
- ONCORNAVIRUS17 pts
- ONOMASTICIAN16 pts
- ONOMATOPOEIA16 pts
- ONOMATOPOEIC18 pts
- ONYCHOPHORAN25 pts
- OOPHORECTOMY24 pts
- OPALESCENCES18 pts
- OPALESCENTLY19 pts
- OPAQUENESSES23 pts
- OPENHANDEDLY22 pts
- OPERATICALLY19 pts
- OPERATIONISM16 pts
- OPERATIONIST14 pts
- OPERATORLESS14 pts
- OPINIONATIVE17 pts
- OPPORTUNISMS18 pts
- OPPORTUNISTS16 pts
- OPPOSABILITY21 pts
- OPPOSITENESS16 pts
- OPPOSITIONAL16 pts
- OPPRESSIVELY22 pts
- OPTIMALITIES16 pts
- OPTIMISATION16 pts
- OPTIMIZATION25 pts
- OPTOMETRISTS16 pts
- ORATORICALLY17 pts
- ORCHESTRALLY20 pts
- ORCHESTRATED18 pts
- ORCHESTRATER17 pts
- ORCHESTRATES17 pts
- ORCHESTRATOR17 pts
- ORCHIDACEOUS20 pts
- ORDINARINESS13 pts
- ORGANICITIES15 pts
- ORGANISATION13 pts
- ORGANIZATION22 pts
- ORGANOLEPTIC17 pts
- ORGANOLOGIES14 pts
- ORIENTALISMS14 pts
- ORIENTALISTS12 pts
- ORIENTALIZED22 pts
- ORIENTALIZES21 pts
- ORIENTATIONS12 pts
- ORIENTEERING13 pts
- ORIGINATIONS13 pts
- ORISMOLOGIES15 pts
- ORNAMENTALLY17 pts
- ORNATENESSES12 pts
- ORNERINESSES12 pts
- ORNITHOLOGIC18 pts
- ORNITHOPTERS17 pts
- OROGRAPHICAL20 pts
- OROPHARYNGES21 pts
- OROPHARYNXES27 pts
- OROTUNDITIES13 pts
- ORTHOCENTERS17 pts
- ORTHODONTIAS16 pts
- ORTHODONTICS18 pts
- ORTHODONTIST16 pts
- ORTHOGENESES16 pts
- ORTHOGENESIS16 pts
- ORTHOGENETIC18 pts
- ORTHOGONALLY19 pts
- ORTHOGRAPHIC23 pts
- ORTHOPAEDICS20 pts
- ORTHOPEDISTS18 pts
- ORTHOPTERANS17 pts
- ORTHOPTERIST17 pts
- ORTHOPTEROID18 pts
- ORTHORHOMBIC24 pts
- ORTHOTROPOUS17 pts
- OSCILLATIONS14 pts
- OSCILLOGRAMS17 pts
- OSCILLOGRAPH20 pts
- OSCILLOSCOPE18 pts
- OSMOLALITIES14 pts
- OSMOLARITIES14 pts
- OSSIFICATION17 pts
- OSTENTATIONS12 pts
- OSTENTATIOUS12 pts
- OSTEOBLASTIC16 pts
- OSTEOCLASTIC16 pts
- OSTEOGENESES13 pts
- OSTEOGENESIS13 pts
- OSTEOLOGICAL15 pts
- OSTEOLOGISTS13 pts
- OSTEOMALACIA16 pts
- OSTEOPATHIES17 pts
- OSTEOPLASTIC16 pts
- OSTEOPOROSES14 pts
- OSTEOPOROSIS14 pts
- OSTEOPOROTIC16 pts
- OSTEOSARCOMA16 pts
- OSTRACODERMS17 pts
- OTHERWORLDLY22 pts
- OTIOSENESSES12 pts
- OTOSCLEROSES14 pts
- OTOSCLEROSIS14 pts
- OUTACHIEVING21 pts
- OUTBALANCING17 pts
- OUTBARGAINED16 pts
- OUTBREEDINGS16 pts
- OUTBUILDINGS16 pts
- OUTCAVILLING18 pts
- OUTCOMPETING19 pts
- OUTCROPPINGS19 pts
- OUTDATEDNESS14 pts
- OUTDELIVERED17 pts
- OUTDESIGNING15 pts
- OUTDISTANCED16 pts
- OUTDISTANCES15 pts
- OUTGENERALED14 pts
- OUTGLITTERED14 pts
- OUTGOINGNESS14 pts
- OUTINTRIGUED14 pts
- OUTINTRIGUES13 pts
- OUTLANDISHLY19 pts
- OUTMANEUVERS17 pts
- OUTNUMBERING17 pts
- OUTORGANIZED23 pts
- OUTORGANIZES22 pts
- OUTPERFORMED20 pts
- OUTPLACEMENT18 pts
- OUTPOLITICKS20 pts
- OUTPOPULATED17 pts
- OUTPOPULATES16 pts
- OUTPREACHING20 pts
- OUTPRODUCING18 pts
- OUTPROMISING17 pts
- OUTRAGEOUSLY16 pts
- OUTREBOUNDED16 pts
- OUTREPRODUCE17 pts
- OUTRIVALLING16 pts
- OUTSIDERNESS13 pts
- OUTSOURCINGS15 pts
- OUTSPARKLING19 pts
- OUTSPREADING16 pts
- OUTSPRINTING15 pts
- OUTSTRETCHED18 pts
- OUTSTRETCHES17 pts
- OUTSTRIPPING17 pts
- OUTTHROBBING20 pts
- OUTTHRUSTING16 pts
- OUTWRESTLING16 pts
- OVARIOTOMIES17 pts
- OVERABSTRACT19 pts
- OVERABUNDANT18 pts
- OVERACHIEVED24 pts
- OVERACHIEVER23 pts
- OVERACHIEVES23 pts
- OVERACTIVITY23 pts
- OVERANALYSES18 pts
- OVERANALYSIS18 pts
- OVERANALYZED28 pts
- OVERANALYZES27 pts
- OVERAROUSALS15 pts
- OVERARRANGED17 pts
- OVERARRANGES16 pts
- OVERASSERTED16 pts
- OVERBALANCED20 pts
- OVERBALANCES19 pts
- OVERBLEACHED23 pts
- OVERBLEACHES22 pts
- OVERBORROWED21 pts
- OVERBROWSING21 pts
- OVERBUILDING19 pts
- OVERBURDENED19 pts
- OVERCAPACITY24 pts
- OVERCASTINGS18 pts
- OVERCAUTIONS17 pts
- OVERCAUTIOUS17 pts
- OVERCHARGING22 pts
- OVERCHILLING21 pts
- OVERCLAIMING20 pts
- OVERCLASSIFY23 pts
- OVERCLEANING18 pts
- OVERCLEARING18 pts
- OVERCLOUDING19 pts
- OVERCOACHING23 pts
- OVERCOMPRESS21 pts
- OVERCONCERNS19 pts
- OVERCONSUMED20 pts
- OVERCONSUMES19 pts
- OVERCONTROLS17 pts
- OVERCORRECTS19 pts
- OVERCOUNTING18 pts
- OVERCRAMMING22 pts
- OVERCRITICAL19 pts
- OVERCROPPING22 pts
- OVERCROWDING22 pts
- OVERDECORATE18 pts
- OVERDESIGNED18 pts
- OVERDEVELOPS21 pts
- OVERDIRECTED19 pts
- OVERDISCOUNT18 pts
- OVERDOCUMENT20 pts
- OVERDOMINANT18 pts
- OVERDRAMATIC20 pts
- OVERDRESSING17 pts
- OVERDRINKING21 pts
- OVEREDUCATED19 pts
- OVEREDUCATES18 pts
- OVEREMPHASES22 pts
- OVEREMPHASIS22 pts
- OVEREMPHATIC24 pts
- OVERENAMORED18 pts
- OVERENGINEER16 pts
- OVERENROLLED16 pts
- OVEREQUIPPED29 pts
- OVERESTIMATE17 pts
- OVEREXCITING25 pts
- OVEREXERCISE24 pts
- OVEREXERTING23 pts
- OVEREXERTION22 pts
- OVEREXPANDED26 pts
- OVEREXPLAINS24 pts
- OVEREXPLICIT26 pts
- OVEREXPLOITS24 pts
- OVEREXPOSING25 pts
- OVEREXPOSURE24 pts
- OVEREXTENDED24 pts
- OVERFAMILIAR20 pts
- OVERFATIGUED20 pts
- OVERFATIGUES19 pts
- OVERFAVORING22 pts
- OVERFOCUSING21 pts
- OVERFOCUSSED21 pts
- OVERFOCUSSES20 pts
- OVERFULFILLS21 pts
- OVERGARMENTS18 pts
- OVERGENEROUS16 pts
- OVERGOVERNED20 pts
- OVERHANDLING20 pts
- OVERHARVESTS21 pts
- OVERHUNTINGS19 pts
- OVERIDEALIZE25 pts
- OVERIDENTIFY22 pts
- OVERINDULGED18 pts
- OVERINDULGES17 pts
- OVERINFLATED19 pts
- OVERINFLATES18 pts
- OVERINFORMED21 pts
- OVERINSURING16 pts
- OVERISSUANCE17 pts
- OVERLABORING18 pts
- OVERLEARNING16 pts
- OVERLENGTHEN19 pts
- OVERLIGHTING20 pts
- OVERLITERARY18 pts
- OVERLORDSHIP21 pts
- OVERMANAGING19 pts
- OVERMANNERED18 pts
- OVERMASTERED18 pts
- OVERMATCHING23 pts
- OVERMATURITY20 pts
- OVERMEDICATE20 pts
- OVERMODESTLY21 pts
- OVERNIGHTERS19 pts
- OVERNIGHTING20 pts
- OVEROPERATED18 pts
- OVEROPERATES17 pts
- OVEROPTIMISM21 pts
- OVEROPTIMIST19 pts
- OVERORGANIZE25 pts
- OVERORNAMENT17 pts
- OVERPACKAGED25 pts
- OVERPACKAGES24 pts
- OVERPAYMENTS22 pts
- OVERPEDALING19 pts
- OVERPEDALLED19 pts
- OVERPEOPLING20 pts
- OVERPERSUADE18 pts
- OVERPLANNING18 pts
- OVERPLANTING18 pts
- OVERPLOTTING18 pts
- OVERPOPULATE19 pts
- OVERPOWERING21 pts
- OVERPRAISING18 pts
- OVERPRESSURE17 pts
- OVERPRINTING18 pts
- OVERPRODUCED21 pts
- OVERPRODUCES20 pts
- OVERPROGRAMS20 pts
- OVERPROMISED20 pts
- OVERPROMISES19 pts
- OVERPROMOTED20 pts
- OVERPROMOTES19 pts
- OVERPROTECTS19 pts
- OVERREACHERS20 pts
- OVERREACHING21 pts
- OVERREACTING18 pts
- OVERREACTION17 pts
- OVERREGULATE16 pts
- OVERRELIANCE17 pts
- OVERREPORTED18 pts
- OVERRESPONDS18 pts
- OVERSANGUINE16 pts
- OVERSATURATE15 pts
- OVERSERVICED21 pts
- OVERSERVICES20 pts
- OVERSHADOWED23 pts
- OVERSHOOTING19 pts
- OVERSIMPLIFY25 pts
- OVERSLAUGHED20 pts
- OVERSLEEPING18 pts
- OVERSLIPPING20 pts
- OVERSPENDERS18 pts
- OVERSPENDING19 pts
- OVERSTAFFING22 pts
- OVERSTEPPING20 pts
- OVERSTIRRING16 pts
- OVERSTOCKING22 pts
- OVERSTRAINED16 pts
- OVERSTRESSED16 pts
- OVERSTRESSES15 pts
- OVERSTREWING19 pts
- OVERSTRIDDEN17 pts
- OVERSTRIDING17 pts
- OVERSTRIKING20 pts
- OVERSTUFFING22 pts
- OVERSUPPLIED20 pts
- OVERSUPPLIES19 pts
- OVERSWEETENS18 pts
- OVERSWINGING20 pts
- OVERTAXATION22 pts
- OVERTHINKING23 pts
- OVERTHROWING22 pts
- OVERTIGHTENS19 pts
- OVERTRAINING16 pts
- OVERTREATING16 pts
- OVERTRIMMING20 pts
- OVERTRUMPING20 pts
- OVERUTILIZED25 pts
- OVERUTILIZES24 pts
- OVERVOLTAGES19 pts
- OVERWATERING19 pts
- OVERWEIGHING23 pts
- OVERWEIGHTED23 pts
- OVERWHELMING24 pts
- OVERWINTERED19 pts
- OVERWITHHELD25 pts
- OVERWITHHOLD25 pts
- OVIPOSITIONS17 pts
- OWLISHNESSES18 pts
- OXALACETATES21 pts
- OXALOACETATE21 pts
- OXYACETYLENE27 pts
- OXYGENATIONS23 pts
- OZONIZATIONS30 pts
- OZONOSPHERES26 pts
Point values shown are Scrabble® (letters only, before board bonuses). Browse deeper via the word-lists hub.
Top 10 highest-scoring words
Scored on letters only (no board bonuses). WWF uses different tile values from Scrabble — J, Q and Z are worth 10 points in WWF; X is worth 8.
| # | Word | Scrabble | WWF |
|---|---|---|---|
| 1 | objectifying | 30 | 35 |
| 2 | ozonizations | 30 | 32 |
| 3 | overequipped | 29 | 33 |
| 4 | objectivisms | 28 | 34 |
| 5 | overanalyzed | 28 | 30 |
| 6 | overanalyzes | 27 | 29 |
| 7 | oxyacetylene | 27 | 28 |
| 8 | oropharynxes | 27 | 27 |
| 9 | objectivists | 26 | 31 |
| 10 | overexplicit | 26 | 30 |
Strategy for this list
O is worth 1 in Scrabble and starts ~3,500 words. O has three two-letter words (OE, OF, OH, OI, OM, ON, OP, OR, OS, OW, OX, OY) and combines beautifully with X, Z and Y for premium plays. O-openers with premium potential include OYEZ, OZONE, OXBLOOD. In Wordle, O is second-most-common in position 4 (SHOWN, ALONG, ABOUT) but less common in position 1.
FAQs
How many 12-letter words start with O?
419 valid 12-letter English words begin with O in the ENABLE English word list.
Are these valid in Wordle and Scrabble?
Words on this page come from the ENABLE English word list. UK Scrabble (Collins Scrabble Words) accepts the overwhelming majority; a handful may not be legal in the North American NASPA Word List (NWL2023).