10-Letter Words Starting With O

Last updated: October 1, 2026

The open ENABLE word list has 791 10-letter words that start with O, about 0.46% of the 172,434 words this site shows. All of them have the same length, so they differ only in their letters. Using commonly used tile values, OUTDAZZLED (30 points) scores the most. 68 have no repeated letter at all. Games use their own dictionaries, so a word here isn't automatically playable everywhere.

At a glance

Fact	Value
Words in this list	791
Share of the ENABLE list shown on this site	0.46%
Length	All 10 letters
Highest base score (common values)	`OUTDAZZLED`, 30
No repeated letters	68

Most common first letters

Letter	Words
O	791

What stands out

None of these words is a palindrome (the same backward and forward).
The most common endings here are -NG (169), -ED (167), -ES (117).
The most common number of vowels (A, E, I, O, U) is 4, found in 481 of these words.
The average length is 10.0 letters.
More of them start with O than with any other letter (791).

All 10-letter O words

OA… 2

oafishness oasthouses

OB… 48

obbligatos obduracies obdurately obediences obediently obeisances obeisantly obfuscated obfuscates obituaries obituarist objections objectives objectless objurgated objurgates oblateness obligately obligating obligation obligatory obligingly obliterate obnubilate obscurants obsequious observable observably observance observants obsessions obsessives obsolesced obsolesces obsoletely obsoleting obstetrics obstructed obstructor obtainable obtainment obtrusions obturating obturation obturators obtuseness obtusities obviations

OC… 26

occasional occasioned occidental occipitals occlusions occultisms occultists occupation occurrence occurrents oceanarium oceanfront oceangoing oceanology ochlocracy ochlocrats octahedral octahedron octameters octarchies octillions octonaries octoploids octothorps ocularists oculomotor

OD… 4

odalisques oddsmakers odiousness odometries

OE… 4

oecologies oenologies oenophiles oesophagus

OF… 12

offensives officering officially officiants officiated officiates offishness offloading offprinted offsetting offsprings oftentimes

OI… 2

oilinesses oinologies

OL… 15

oldfangled oleaginous olecranons oleographs oleoresins olfactions oligarchic oligoclase oligomeric oligophagy oligopsony olivaceous olivenites olivinitic ololiuquis

OM… 8

ommatidial ommatidium omnificent omnipotent omniranges omniscient omnivorous omophagies

ON… 8

oncologies oncologist onionskins onomastics onslaughts ontogenies ontologies ontologist

OO… 1

oozinesses

OP… 38

opacifying opalescent opalescing opaqueness openhanded opennesses operagoers operagoing operations operatives operculars operculate operculums operettist ophiuroids ophthalmia ophthalmic oppilating opposeless oppositely opposition oppressing oppression oppressive oppressors opprobrium opsonified opsonifies opsonizing optatively optimality optimising optimistic optimizers optimizing optionally optometric opulencies

OR… 70

oracularly orangeades orangeries orangewood orangutans oratorical oratresses orbiculate orchardist orchestral orchestras orchidlike orchitises ordainment ordinances ordinarier ordinaries ordinarily ordination ordonnance organelles organicism organicist organicity organisers organising organismal organismic organizers organizing organology organzines orientally orientated orientates orienteers oriflammes originally originated originates originator orismology ornamental ornamented ornateness orneriness ornithines ornithopod ornithoses ornithosis orogeneses orogenesis orogenetic orographic oropharynx orotundity orphanages orphanhood orphically orrisroots orthoclase orthodoxes orthodoxly orthoepies orthoepist orthogonal orthograde orthopedic orthoptera orthotists

OS… 30

oscillated oscillates oscillator osculating osculation osculatory osmeterium osmiridium osmolality osmolarity osmometers osmometric ossifrages osteitides ostensible ostensibly ostensoria osteoblast osteoclast osteocytes osteogenic osteopaths osteopathy osteosises ostracised ostracises ostracisms ostracized ostracizes ostracodes

OT… 7

otherguess otherwhere otherwhile otherworld otioseness otiosities otoscopies

OU… 265

oubliettes outachieve outarguing outbalance outbargain outbarking outbawling outbeaming outbegging outbidding outbitched outbitches outblazing outbleated outblessed outblesses outbloomed outbluffed outblushed outblushes outboasted outbragged outbraving outbrawled outbribing outbulking outbullied outbullies outburning outcapered outcatches outcaviled outcharged outcharges outcharmed outcheated outchidden outchiding outclassed outclasses outclimbed outcoached outcoaches outcompete outcooking outcounted outcrawled outcropped outcrossed outcrosses outcrowing outcursing outdancing outdatedly outdazzled outdazzles outdebated outdebates outdeliver outdesigns outdodging outdragged outdrawing outdreamed outdressed outdresses outdriving outdropped outdueling outduelled outearning outechoing outercoats outfabling outfasting outfawning outfeasted outfeeling outfielder outfigured outfigures outfinding outfishing outfitters outfitting outflanked outflowing outfooling outfooting outfrowned outfumbled outfumbles outgaining outgassing outgeneral outgivings outglaring outglitter outglowing outgnawing outgrinned outgrossed outgrosses outgrowing outgrowths outguessed outguesses outguiding outgunning outhearing outhitting outhomered outhowling outhumored outhunting outhustled outhustles outjinxing outjumping outjutting outkeeping outkicking outkilling outkissing outlanders outlandish outlasting outlaughed outlawries outleaping outlearned outmanning outmarched outmarches outmatched outmatches outmuscled outmuscles outnumbers outpainted outpassing outpatient outperform outpitched outpitches outpitying outplanned outplaying outplodded outplotted outpointed outpolling outpouring outpowered outpraying outpreened outpressed outpresses outpricing outproduce outpromise outpulling outpunched outpunches outpushing outputting outquoting outrageous outraising outranging outranking outreached outreaches outreading outrebound outriggers outrightly outringing outrivaled outroaring outrocking outrolling outrooting outrunning outrushing outsailing outsavored outschemed outschemes outscolded outscooped outscoring outscorned outselling outserving outshaming outshining outshouted outsinging outsinning outsitting outskating outslicked outsmarted outsmiling outsmoking outsnoring outsoaring outspanned outsparkle outspeeded outspelled outspreads outsprints outstaring outstarted outstating outstation outstaying outsteered outstretch outstrides outstudied outstudies outstunted outsulking outtalking outtasking outtelling outthanked outthought outthrusts outtowered outtrading outtricked outtrotted outtrumped outvaluing outvaunted outvoicing outwaiting outwalking outwarring outwasting outwatched outwatches outwearied outwearies outwearing outweeping outweighed outwhirled outwilling outwinding outwishing outwitting outworkers outworking outwrestle outwriting outwritten outwrought outyelling outyelping outyielded

OV… 235

ovalbumins ovalnesses ovariotomy ovaritides overacting overaction overactive overarched overarches overassert overbaking overbeaten overbetted overbidden overbilled overbleach overblouse overboiled overbooked overborrow overbought overbright overbrowse overbrutal overbuilds overburden overburned overbuying overcalled overcasted overcharge overchills overclaims overcleans overclears overclouds overcomers overcoming overcommit overcooked overcooled overcounts overcrowds overcuring overdaring overdecked overdesign overdirect overdosage overdosing overdrafts overdrinks overdriven overdrives overdrying overdubbed overdyeing overeaters overeating overedited overemoted overemotes overexcite overexerts overexpand overexpose overextend overfacile overfavors overfeared overfilled overfished overfishes overflight overflowed overflying overfunded overgilded overgirded overglazes overgoaded overgovern overgrazed overgrazes overgrowth overhanded overhandle overhating overhauled overheaped overheated overhoping overhunted overhyping overinform overinsure overissued overissues overjoying overkilled overlabors overlading overlapped overlavish overlaying overleaped overlearns overlength overlights overliving overloaded overlooked overlorded overloving overmanage overmanned overmantel overmaster overmature overmelted overmighty overmilked overmining overmixing overmodest overmuches overnights overpassed overpasses overpaying overpedals overpeople overplaids overplants overplayed overpluses overplying overpotent overpowers overpraise overpriced overprices overprints overprized overprizes overpumped overrating overreacts overreport overridden overriding overruffed overruling oversalted oversauced oversauces oversaving overscaled overseeded overseeing oversewing overshadow overshirts overshoots oversights oversimple oversimply overskirts overslaugh oversleeps oversmoked oversmokes oversoaked overspends overspills overspread overstaffs overstated overstates overstayed oversteers overstocks overstrain overstress overstrewn overstrews overstride overstrike overstrode overstruck overstrung overstuffs oversubtle oversudsed oversudses oversupped oversupply overswings overtaking overtalked overtasked overtaxing overthinks overthrown overthrows overtiming overtipped overtiring overtoiled overtopped overtraded overtrades overtrains overtreats overtricks overtrumps overturing overturned overurging overvalued overvalues overvoting overwarmed overwaters overweened overweighs overweight overwetted overwhelms overwinter overworked overwrites oviposited ovipositor ovulations

OW… 2

owlishness ownerships

OX… 10

oxacillins oxidations oxidizable oxygenated oxygenates oxygenator oxygenless oxymoronic oxyuriases oxyuriasis

OY… 1

oysterings

OZ… 3

ozocerites ozokerites ozonations

Using these words

To find 10-letter words in your own letters, use the Word Unscrambler and set Length to 10 under Advanced filters. For example, the letters AEFHINOSSS include OAFISHNESS. Words come from the open ENABLE word list. Different games use different dictionaries, so always check the rules of your game.