There are 405 adjectives that start with O in our adjective list of 17,163 words, and every one of them is on this page — grouped by length so you can scan fast, with a live filter when you need something narrower. The biggest group is the 8-letter words (68 of them); the spread is 2 of them 2 letters long, 7 of them 3 letters long, 9 of them 4 letters long, 22 of them 5 letters long, and more up to 15 letters. The longest entries are omnidirectional, opisthognathous and onomatopoeical. Writers keep adjective lists like this one open while drafting: when every description sounds flat, scanning a letter’s worth of options is the fastest way to find the precise word.
The full list
2-letter words (2)
ok on
3-letter words (7)
odd off old one otc out own
4-letter words (9)
oily okay only oozy open oral otic oval over
5-letter words (22)
oaken oaten obese ocher ochre octal ohmic oiled olden older olive omani optic other outer outre ovate overt ovine ovoid owing owned
6-letter words (25)
oafish oblate oblong obtuse occult ocular oddish odious offish oldish online onside oozing opaque opened orange ornate ornery orphic oscine osteal otiose outlaw ovular owlish
7-letter words (58)
obliged oblique obovate obscene obscure obvious oceanic octuple odorous offbeat offhand offside olympic ominous omnibus oneiric onerous onetime ongoing onshore onstage onymous opaline opencut opening operant operose opposed optical optimal optimum opulent orbital ordered orderly ordinal organic orotund osmotic osseous ottoman outback outbred outcast outdoor outmost outside outsize outward ovarian overage overall overarm overdue overfed oversea oviform oxonian
8-letter words (68)
obdurate obedient obligate obliging observed obsessed obsolete occluded occupied odorless offended official offshore offstage olympian omissive oncoming opencast operable operatic opponent opposing opposite optative optional oracular orangish ordained ordinary oriental oriented original orphaned orthodox oscitant ossified ototoxic outboard outbound outcaste outdated outgoing outlawed outlined outlying outmoded outraged outright outsized overawed overbold overbusy overcast overdone overfond overfull overhand overhead overland overmuch overnice overripe overseas oversewn overshot oversize oxidised oxidized
9-letter words (65)
objective obligated oblivious obnoxious observant observing obsessive obstetric obstinate obtrusive obviating occipital occlusive occurrent ocellated octagonal odourless oecumenic offending offensive offhanded officious oleaceous olfactive olfactory omissible oncologic onomastic operating operative opportune opposable oppressed opthalmic orbicular organised organized orgiastic orienting orthoptic orwellian ossicular ostensive otherwise outdoorsy outermost outfitted outrigged outspoken outspread overblown overeager overgrown overhasty overjoyed overladen overlarge overlying overnight overproud oversexed oversized oviparous ownerless oxidative
10-letter words (52)
obligatory obliterate obsequious observable obstructed obtainable occasional occidental oceangoing octangular oleaginous oligarchic omnipotent omniscient omnivorous opalescent openhanded operculate ophthalmic oppositive oppressive optimistic oratorical orbiculate orchestral organismal organismic orientated ornamental orthogonal orthopedic ossiculate ossiferous ostensible outclassed outflowing outlandish outrageous overactive overgreedy overhanded overheated overloaded overlooked overmodest overpriced overriding overstated overstrung overturned overweight oxidizable
11-letter words (46)
obliterable obliterated obsessional obsolescent obstetrical obstructive odoriferous oecumenical offenceless offenseless omnifarious omnipresent oncological ontogenetic ontological openhearted openmouthed operational operculated opinionated opportunist opprobrious orientating originative orthodontic orthopaedic orthostatic oscillating oscillatory outstanding overanxious overbearing overcareful overcurious overdressed overexcited overflowing overjealous overlooking overrefined overserious overstuffed overvaliant overweening overwrought overzealous
12-letter words (27)
oblanceolate obligational obstreperous occupational octogenarian octosyllabic oligarchical onomatopoeic opinionative orchestrated organicistic orthographic orthopedical orthotropous ostentatious otherworldly outstretched overabundant overburdened overcautious overcritical overdelicate overfamiliar overgenerous overpowering overreaching overwhelming
13-letter words (12)
objectionable observational onomatopoetic opportunistic oropharyngeal overambitious overconfident overcredulous overemotional overindulgent oversensitive ovoviviparous
14-letter words (10)
onomatopoeical operationalist organisational organizational ornithological orthomolecular overprotective oversolicitous oversubscribed oversuspicious
15-letter words (2)
omnidirectional opisthognathous
Frequently asked questions
How many adjectives that start with O are there?
Our adjective list contains 405 adjectives that start with O, out of 17,163 entries in total. They run from 2 to 15 letters, and the 8-letter group is the largest with 68 words.
What are the longest adjectives that start with O?
The longest are omnidirectional (15 letters), opisthognathous (15 letters) and onomatopoeical (14 letters).
Which adjectives that start with O score highest in Scrabble?
By raw letter values, the top scorers on this page are oxidizable (29 points), objectionable (26 points) and oxidized (26 points) — before any letter or word multipliers. One honest caveat: this list is a broad English word list, so a few rare or technical entries appear that official game dictionaries (and Wordle’s answer list) do not accept. Always check a play against the dictionary your game uses.
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