Adjectives Starting with O and Containing N

Explore 517 verified English adjectives starting with O and containing N, including Open, Often, Online, Original, Operating, Opening and Organic. Browse these describing words and descriptive modifiers below, or check adjective order and comparative rules in our adjective grammar guide.

Refine list...
JUMP:
Sort:

Group:

Case:

View:

JUMP TO:
Select any word to view available definitions & photosSelect any word for details
oaken
oaten
obedient
obscene
obnoxious
obtainable
objectionable
observational
obsidian
obliging
observant
oblong
obstinate
obstructionist
obesogenic
obsessional
obsolescent
obeisant
obtunded
obscurantist
obstruent
obligational
objectional
obtundent
oblanceolate
obscurant
occasional
occupational
oceanic
oceanfront
oceanside
octogenarian
octagonal
oceanographic
oceanview
occidental
oceangoing
octillion
occidentalist
octoroon
octennial
oceanward
occulting
oceanographical
occasionalist
octangular
octonary
occurrent
oceanological
octopodan
odorant
odontoid
odontogenic
odyssean
odontic
odonate
odontocete
odesan
odontological
odontalgic
odontologic
odontoblastic
odontomatous
odontophoran
odontorhynchous
odontophorous
odontophoral
odontostomatous
oedipean
oenophilic
oenanthic
often
offensive
offline
offended
offseason
offscreen
offhand
offputting
offhanded
officinal
offenseless
offenceful
olden
oligocene
oleaginous
oldfangled
olefinic
olefiant
olecranal
oleoresinous
oligopsonistic
olivinic
olent
olivinitic
ologoan
ominous
omnibus
omnipotent
omnipresent
omniscient
omani
omnivorous
omnidirectional
omnisexual
omnibenevolent
omnicidal
omental
omnicompetent
omnifarious
omphalomesenteric
omniform
ombrogenous
omnific
omnipatient
omnificent
omniferous
omnidenominational
omnimode
omdurmani
on
one
only
online
onto
ongoing
onward
onboard
onsite
onerous
onshore
onscreen
onstage
oncoming
ontological
onetime
onyx
onside
onstream
oncologic
oncological
onrushing
onomatopoeic
oncogenic
oogenetic
oogonial
open
operating
opening
opponent
operational
optional
opposing
opportunistic
opinionated
opportune
opulent
opportunist
oppositional
opalescent
openhearted
optoelectronic
openable
operant
openhanded
opinioned
openmouthed
opencast
oppositionist
ophidian
original
organic
ordinary
orange
organized
organizational
oriented
orphan
orient
oriental
ornamental
orthogonal
ornate
ordinal
ornery
orthodontic
orangey
originalist
orientalist
organismal
ornithological
orthonormal
orbitofrontal
orangish
ostentatious
ostensible
osteogenic
ostensive
oscine
oscillational
osculant
osseocartilaginous
osteocartilaginous
osteogenetic
osteogenous
osteichthyan
ostracodan
oscitant
oscinine
osteochondromatous
osteonecrotic
osseoaponeurotic
ostracean
ottoman
ottawan
otolaryngological
otarine
otorhinolaryngologic
outstanding
outgoing
outspoken
outpatient
outbound
outlandish
outlying
outworn
outland
outswinging
outcrossing
oundy
outdwelling
outlinear
overnight
overwhelming
ovarian
overarching
overland
overriding
overpowering
overgrown
overbearing
overblown
overconfident
overdrawn
overground
overhand
oversensitive
overlong
overdependent
overabundant
overemotional
overinflated
ovine
overweening
ovenproof
overindulgent
own
owing
ownerless
ownable
ownsome
oxymoronic
oxyacetylene
oxygenic
oxygenless
oxyhydrogen
oxytone
oxyntic
oxytonic
oxygenous
oxidational
ozonic
ozarkian
ozonous
ozoniferous

•Browse Adjectives by Letter (A to Z)

Select a starting letter to browse adjectives
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Dictionary & Reference
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.