Adjectives That Start With O
Browse adjectives that start with O, with meanings, examples, and links to full adjective definition pages.
Entries: 210
Adjective list
- oafish
- oaken
- obedient
- obeisant
- obese
- objectionable
- objective
- obligated
- obligatory
- obliging
- oblique
- obliterated
- oblivious
- oblong
- obnoxious
- obscene
- obscure
- observable
- observant
- observational
- obsessed
- obsessive
- obsolete
- obstetric
- obstinate
- obstreperous
- obstructive
- obtainable
- obtuse
- obvious
- occasional
- occult
- occupational
- occupied
- ocean-blue
- ocean-going
- oceanic
- ochre
- octagonal
- octal
- octogenarian
- ocular
- odd
- odd-looking
- oddball
- odious
- odorless
- odorous
- off-white
- offbeat
- offended
- offensive
- official
- officious
- offline
- offshore
- oil-free
- oil-resistant
- okay
- old
- old-fashioned
- old-looking
- old-school
- old-time
- older
- oldest
- olfactory
- olive
- olive-colored
- olive-coloured
- Olympic
- Omani
- ominous
- omnidirectional
- omnipotent
- omnipresent
- omniscient
- omnivorous
- on-demand
- on-site
- one
- one-eyed
- one-sided
- one-time
- one-way
- ongoing
- online
- onshore
- ontological
- opaque
- open
- open-access
- open-ended
- open-hearted
- open-minded
- open-plan
- open-source
- openhearted
- operable
- operatic
- operational
- operative
- opinionated
- opportune
- opportunistic
- opposable
- opposed
- opposing
- opposite
- oppressive
- optimal
- optimistic
- optional
- opulent
- oracular
- oral
- orange
- orange-red
- orbital
- orbiting
- orchestral
- ordained
- orderly
- ordinary
- organic
- organizational
- organized
- original
- originative
- ornamental
- ornate
- ornery
- ornithological
- orphaned
- orthodox
- orthogonal
- orthopedic
- Oslo-based
- ostensible
- ostentatious
- other
- otherwise
- Ottoman
- outcast
- outcome-based
- outcome-driven
- outcome-focused
- outdated
- outdoor
- outdoorsy
- outer
- outgoing
- outlandish
- outlawed
- outlying
- outmoded
- outraged
- outrageous
- outright
- outside
- outspoken
- outstanding
- outstretched
- outward
- oval
- oval-shaped
- oven-ready
- overactive
- overambitious
- overarching
- overbearing
- overblown
- overbold
- overcast
- overcautious
- overconfident
- overcrowded
- overdependent
- overdramatic
- overdue
- overeager
- overemotional
- overenthusiastic
- overextended
- overfriendly
- overgenerous
- overgrown
- overhand
- overhead
- overheated
- overhyped
- overjoyed
- overlapping
- overloaded
- overly-sensitive
- overpowering
- overpriced
- overprotective
- overqualified
- overrated
- overreaching
- overripe
- overseas
- oversensitive
- oversimplified
- oversized
- overstated
- overt
- overtired
- overweight
- overwhelmed
- overwhelming
- overworked
- overwrought
- overzealous
- owlish
- owner-friendly
- Oxford-style
- oxidized
- oxygen-rich