12-letter words starting with O

419 words — Scrabble scores shown

There are 419 12-letter words that start with the letter O in our word list. All words are valid in standard English dictionaries and can be used in Scrabble and Words with Friends. The number shown on each word is its Scrabble point value.

2-letter (14) 3-letter (45) 4-letter (107) 5-letter (181) 6-letter (326) 7-letter (618) 8-letter (972) 9-letter (922) 10-letter (791) 11-letter (591) 12-letter (419) 13-letter (305) 14-letter (215) 15-letter (159)

oafishnesses¹⁸↗
oarsmanships¹⁹↗
obdurateness¹⁵↗
obfuscations¹⁹↗
objectifying³⁰↗
objectivisms²⁸↗
objectivists²⁶↗
objurgations²²↗
oblanceolate¹⁶↗
oblatenesses¹⁴↗
obligatorily¹⁸↗
obligingness¹⁶↗
obliterating¹⁵↗
obliteration¹⁴↗
obliterative¹⁷↗
obliterators¹⁴↗
obnubilating¹⁷↗
obnubilation¹⁶↗
obscurantism¹⁸↗
obscurantist¹⁶↗
obscurations¹⁶↗
obsequiously²⁶↗
observations¹⁷↗
obsolescence¹⁸↗
obsoleteness¹⁴↗
obstetrician¹⁶↗
obstreperous¹⁶↗
obstructions¹⁶↗
obstructives¹⁹↗
obtusenesses¹⁴↗
occasionally¹⁹↗
occidentally²⁰↗
occultations¹⁶↗
occupational¹⁸↗
oceanography²³↗
oceanologies¹⁵↗
oceanologist¹⁵↗
ochlocracies²¹↗
octahedrally²¹↗
octapeptides¹⁹↗
octogenarian¹⁵↗
octosyllabic²¹↗
octosyllable¹⁹↗
odiousnesses¹³↗
odontoblasts¹⁵↗
officeholder²⁴↗
officialdoms²³↗
officialeses²⁰↗
officialisms²²↗
officiations²⁰↗
offishnesses²¹↗
offscourings²¹↗
oleaginously¹⁶↗
oleandomycin²⁰↗
oleoresinous¹²↗
olfactometer¹⁹↗
oligarchical²⁰↗
oligochaetes¹⁸↗
oligophagies¹⁹↗
oligophagous¹⁹↗
oligopsonies¹⁵↗
oligotrophic²⁰↗
omnipotences¹⁸↗
omnipotently¹⁹↗
omnipresence¹⁸↗
omnisciences¹⁸↗
omnisciently¹⁹↗
omnivorously²⁰↗
oncogenicity²⁰↗
oncornavirus¹⁷↗
onomastician¹⁶↗
onomatopoeia¹⁶↗
onomatopoeic¹⁸↗
onychophoran²⁵↗
oophorectomy²⁴↗
opalescences¹⁸↗
opalescently¹⁹↗
opaquenesses²³↗
openhandedly²²↗
operatically¹⁹↗
operationism¹⁶↗
operationist¹⁴↗
operatorless¹⁴↗
opinionative¹⁷↗
opportunisms¹⁸↗
opportunists¹⁶↗
opposability²¹↗
oppositeness¹⁶↗
oppositional¹⁶↗
oppressively²²↗
optimalities¹⁶↗
optimisation¹⁶↗
optimization²⁵↗
optometrists¹⁶↗
oratorically¹⁷↗
orchestrally²⁰↗
orchestrated¹⁸↗
orchestrater¹⁷↗
orchestrates¹⁷↗
orchestrator¹⁷↗
orchidaceous²⁰↗
ordinariness¹³↗
organicities¹⁵↗
organisation¹³↗
organization²²↗
organoleptic¹⁷↗
organologies¹⁴↗
orientalisms¹⁴↗
orientalists¹²↗
orientalized²²↗
orientalizes²¹↗
orientations¹²↗
orienteering¹³↗
originations¹³↗
orismologies¹⁵↗
ornamentally¹⁷↗
ornatenesses¹²↗
ornerinesses¹²↗
ornithologic¹⁸↗
ornithopters¹⁷↗
orographical²⁰↗
oropharynges²¹↗
oropharynxes²⁷↗
orotundities¹³↗
orthocenters¹⁷↗
orthodontias¹⁶↗
orthodontics¹⁸↗
orthodontist¹⁶↗
orthogeneses¹⁶↗
orthogenesis¹⁶↗
orthogenetic¹⁸↗
orthogonally¹⁹↗
orthographic²³↗
orthopaedics²⁰↗
orthopedists¹⁸↗
orthopterans¹⁷↗
orthopterist¹⁷↗
orthopteroid¹⁸↗
orthorhombic²⁴↗
orthotropous¹⁷↗
oscillations¹⁴↗
oscillograms¹⁷↗
oscillograph²⁰↗
oscilloscope¹⁸↗
osmolalities¹⁴↗
osmolarities¹⁴↗
ossification¹⁷↗
ostentations¹²↗
ostentatious¹²↗
osteoblastic¹⁶↗
osteoclastic¹⁶↗
osteogeneses¹³↗
osteogenesis¹³↗
osteological¹⁵↗
osteologists¹³↗
osteomalacia¹⁶↗
osteopathies¹⁷↗
osteoplastic¹⁶↗
osteoporoses¹⁴↗
osteoporosis¹⁴↗
osteoporotic¹⁶↗
osteosarcoma¹⁶↗
ostracoderms¹⁷↗
otherworldly²²↗
otiosenesses¹²↗
otoscleroses¹⁴↗
otosclerosis¹⁴↗
outachieving²¹↗
outbalancing¹⁷↗
outbargained¹⁶↗
outbreedings¹⁶↗
outbuildings¹⁶↗
outcavilling¹⁸↗
outcompeting¹⁹↗
outcroppings¹⁹↗
outdatedness¹⁴↗
outdelivered¹⁷↗
outdesigning¹⁵↗
outdistanced¹⁶↗
outdistances¹⁵↗
outgeneraled¹⁴↗
outglittered¹⁴↗
outgoingness¹⁴↗
outintrigued¹⁴↗
outintrigues¹³↗
outlandishly¹⁹↗
outmaneuvers¹⁷↗
outnumbering¹⁷↗
outorganized²³↗
outorganizes²²↗
outperformed²⁰↗
outplacement¹⁸↗
outpoliticks²⁰↗
outpopulated¹⁷↗
outpopulates¹⁶↗
outpreaching²⁰↗
outproducing¹⁸↗
outpromising¹⁷↗
outrageously¹⁶↗
outrebounded¹⁶↗

12-letter words starting with O

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