Adjectives Starting with O

• All O Adjectives
• O Adjectives to Describe a Person
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Interesting Categories for the Adjectives Starting with O

The Interesting Adjectives category include adjectives which can make the text more exciting to read or hear. For the Positive Adjectives lists, the words included are those which convey the favorable qualities of a person, event or place, while the Negative Adjectives categories are composed of undesirable characteristics.

Adjectives that Start with O

Interesting Adjectives

oblique: neither parallel nor at a right angle to a specified or implied line; slanting

–          we sat on the settee oblique to the fireplace

oblivious: not aware of or not concerned about what is happening around one

–          she became absorbed, oblivious to the passage of time

obscure: not discovered or known about; uncertain

–          his origins and parentage are obscure

obsequious: obedient or attentive to an excessive or servile degree

–          they were served by obsequious waiters

obsolescent: becoming obsolete

–          the custom is now obsolescent

Positive Adjectives to Describe a Person

obedient: complying or willing to comply with orders or requests; submissive to another’s will

–          she was totally obedient to him

objective: free of bias; not influenced by personal feelings or opinions in considering and representing facts

–          historians try to be objective and impartial

observant: quick to notice things

–          her observant eye took in every detail

omniscient: knows everything

–          the story is told by an omniscient narrator

optimistic: hopeful and confident about the future

–          she remained optimistic despite the trials

Positive Adjectives to Describe an Event

observable: able to be noticed or perceived; discernible

–          observable differences

official: relating to an authority or public body and its duties, actions, and responsibilities

–          the governor’s official engagements

oncoming: due to happen or occur in the near future

–          the oncoming Antarctic winter

operatic: of, relating to, or characteristic of opera

–          operatic performance

opportune: well-chosen or particularly favorable or appropriate

–          he couldn’t have arrived at a less opportune moment

Positive Adjectives to Describe a Place

oceanic: of or relating to the ocean.

–          oceanic atolls

offshore: situated at sea some distance from the shore.

–          this huge stretch of coastline is dominated by offshore barrier islands

opalescent: showing varying colors as an opal does

–          an opalescent river

operational: in or ready for use

–          the new laboratory is fully operational

opulent: rich and luxurious or lavish

–          opulent hotel room

Negative Adjectives to Describe a Person

oafish: stupid, uncultured, or clumsy

–          her oafish husband

obnoxious: extremely unpleasant

–          He was a woman-chasing, obnoxious bastard in a dozen different ways.

obsessive: affected by an obsession

–          she became obsessive about her schoolwork

offhand: ungraciously or offensively nonchalant or cool in manner.

–          his offhand way of talking

officious: assertive of authority in an annoyingly domineering way, especially with regard to petty or trivial matters.

–          a policeman came to move them on, an officious, spiteful man

Negative Adjectives to Describe an Event

objectionable: arousing distaste or opposition; unpleasant or offensive.

–          I find his theory objectionable in its racist undertones.

obstinate: (of an unwelcome phenomenon or situation) very difficult to change or overcome

–          the obstinate problem of unemployment

offensive: causing someone to feel deeply hurt, upset, or angry.

–          the allegations made are deeply offensive to us

ominous: giving the impression that something bad or unpleasant is going to happen; threatening; inauspicious.

–          there were ominous dark clouds gathering overhead

onerous: involving an amount of effort and difficulty that is oppressively burdensome.

–          he found his duties increasingly onerous

Negative Adjectives to Describe a Place

obscene: offensive or disgusting by accepted standards of morality and decency

–          obscene gallery

odd: different from what is usual or expected; strange

–          odd neighborhood

odious: extremely unpleasant; repulsive

–          the whole area was an odious wilderness

oily: covered or soaked with oil

–          oily deck

oppressive: unjustly inflicting hardship and constraint, especially on a minority or other subordinate group

–          oppressive country

Heroic Adjectives

olympian: befitting or characteristic of an Olympian; especially : LOFTY

–          his Olympian image

outstanding: exceptionally good

–          an outstanding soldier

overactive: excessively active

–          an overactive guardian

overt: done or shown openly; plainly or readily apparent, not secret or hidden.

–          an overt act of bravery

overwhelming: very strong; very great in amount

–          his overwhelming accomplishments

Sporty Adjectives

olympic: of or relating to the ancient city of Olympia or the Olympic Games.

–          an Olympic champion

orthopedic: relating to orthopedics

–          the injured athlete has undergone orthopedic treatment

outdoor: fond of the open air or open-air activities

–          a rugged, outdoor type

outright: undisputed; clear

–          an outright victory

overactive: excessively active

–          an overactive midfielder

Romantic Adjectives

open: (of a person) frank and communicative; not given to deception or concealment.

–          she was open and sincere

otherworldly: seeming to belong to or come from another world

–          otherworldly beauty

outgoing: friendly and socially confident

–          she’s an extremely affable, jovial, outgoing type of person

outspoken: frank in stating one’s opinions

–          her outspoken nature

overjoyed: extremely happy

–          overjoyed to see you

Shortest Adjectives

ok: being satisfactory or in satisfactory condition

–          an ok movie

on: in operation or operational

–          left the oven on

odd: not easily explained

–          it is odd that his name is never mentioned

off: not performing or scheduled for duties; not in operation or operational

–          the lights are off

old: just preceding something else in time or order

–          my old house was larger

one: eminent beyond or above comparison

–          she’s one girl in a thousand

out: being out or having grown cold

–          the fire is out

own: belonging to or on behalf of a specified person (especially yourself); preceded by a possessive

–          for your own use

oily: smeared or soiled with grease or oil

–          get rid of rubbish and oily rags

Longest Adjectives

overenthusiastic: unduly enthusiastic

–          overenthusiastic fans

omnidirectional: not directional

–          omnidirectional antenna

opisthognathous: having receding jaws

–          opisthognathous insects

onomatopoeical: (of words) formed in imitation of a natural sound

–          onomatopoeic words are imitative of noises

operationalist: of or relating to or espousing operationalism

–          operationalist doctrine

organisational: of or relating to an organization

–          organisational behavior

organizational: of or relating to an organization

–          organizational structure

ornithological: of or relating to ornithology

–          her ornithological interests

orthomolecular: designating or relating to a form of treatment of mental disorders that seeks to restore biochemical balance in the body with large doses of vitamins and minerals

–          orthomolecular medicine

overprotective: overly protective

–          overprotective parents