OK
1 of 4adverb or adjective
ō-ˈkā 
in assenting or agreeing also ˈō-ˌkā
variants or okay or less commonly ok
: all right
OK, Doctor, I'll let you know
John Hersey
John HerseyOK
2 of 4noun
ō-ˈkā
variants or okay
: approval, endorsement
OK
3 of 4verb
ō-ˈkā
variants or okay
OK'd or okayed; OK'ing or okaying
transitive verb
: approve, authorize
OK
4 of 4abbreviation
Oklahoma
Synonyms
Adverb or adjective
- agreeable
- all right
- alright
- copacetic
- copasetic
- copesetic
- ducky
- fine
- good
- hunky-dory
- jake [slang]
- palatable
- satisfactory
Noun
- approbation
- approval
- blessing
- favor
- imprimatur
Verb
- accredit
- approbate
- approve
- authorize
- clear
- confirm
- finalize
- formalize
- homologate
- ratify
- sanction
- warrant
See all Synonyms & Antonyms 
Example Sentences
Noun We need her OK on this before we place the order. The boss gave his okay. Verb The boss needs to OK this before we place the order. a judge will have to OK the search warrant
Word History
Etymology
Adverb or adjective, Noun, and Verb
abbreviation of oll korrect, facetious alteration of all correct
First Known Use
Adverb Or Adjective
1839, in the meaning defined above
Noun
1841, in the meaning defined above
Verb
1888, in the meaning defined above
Phrases Containing OK
Kids Definition
OK 1 of 4
adverb or adjective
variants or okay
ō-ˈkā
: all right I think I did OK on the test. She's not the smartest kid, but she's an okay student.
OK
2 of 4noun
variants or okay
: approval sense 2
I need your OK to begin.
OK
3 of 4verb
variants or okay
OK'd or okayed; OK'ing or okaying
: approve sense 2, authorize
OK
4 of 4abbreviation
Oklahoma
OK 1 of 4
adjective
variants or okay
1
as in alright
being to one's liking that dinner was OK, but I liked yesterday's better Synonyms & Similar Words
Relevance
- alright
- fine
- good
- nice
- delicious
- satisfactory
- all right
- pleasant
- agreeable
- hunky-dory
- ducky
- palatable
- jake
- copacetic
- delightful
- welcome
- copasetic
- acceptable
- copesetic
- pleasing
- adequate
- gratifying
- tolerable
- decent
- felicitous
- scrumptious
- dreamy
- passable
- delectable
Antonyms & Near Antonyms
- bad
- unsatisfactory
- unacceptable
- disagreeable
- poor
- lousy
- wanting
- deficient
- inferior
- wretched
- substandard
- mediocre
- punk
- middling
- second-class
- second-rate
2
as in acceptable
of a level of quality that meets one's needs or standards this latest draft of the essay is OK but could be better Synonyms & Similar Words
- acceptable
- fine
- satisfactory
- adequate
- good
- decent
- all right
- tolerable
- useful
- passable
- serviceable
- correct
- respectable
- minimal
- up to snuff
- suitable
- fairish
- worthy
- appropriate
- standard
- fair
- agreeable
- average
- bearable
- right
- indifferent
- mediocre
- due
- endurable
- ordinary
- middling
- fitting
- sufferable
- unexceptional
- so-so
- common
- satisfying
- meet
- proper
- run-of-the-mine
- seemly
- gratifying
- run-of-the-mill
- second-rate
- run-of-mine
Antonyms & Near Antonyms
- unacceptable
- wrong
- inadequate
- insufficient
- unsatisfactory
- bad
- lacking
- wanting
- useless
- deficient
- objectionable
- unfit
- unsuitable
- unworthy
- imperfect
- disagreeable
- mean
- improper
- cheap
- indecent
- defective
- incomplete
- pitiful
- poor
- shoddy
- faulty
- insufficient
- lamentable
- short
- shabby
- intolerable
- spare
- unbearable
- stingy
- meager
- skimpy
- mean
- great
- insufferable
- special
- disreputable
- miserable
- miserly
- meagre
- unendurable
- atrocious
- extreme
- optimal
- dandy
- scanty
- optimum
- maximum
- exceptional
- fancy
- execrable
- dissatisfying
- wretched
- neat
- vile
- wonderful
- supreme
- terrific
- top
- superior
- superb
- splendid
- prime
- noble
- marvelous
- par excellence
- divine
- marvellous
- keen
- grand
- fabulous
- exquisite
- swell
- niggardly
- unparalleled
- classic
- boss
- nifty
- unmatched
- heavenly
- superlative
- banner
- stellar
- peerless
- sensational
- premium
- matchless
- preeminent
- unsurpassed
- sterling
- capital
- maximized
- jim-dandy
- groovy
- crackerjack
- tip-top
- first-class
- top-notch
- A1
- bang-up
- first-rate
- supernal
- high-grade
OK
2 of 4adverb
variants or okay
1
as in fine
in a satisfactory way you did OK on that last test Synonyms & Similar Words
- fine
- good
- alright
- well
- nicely
- correctly
- acceptably
- decently
- all right
- sufficiently
- tolerably
- adequately
- satisfactorily
- passably
- respectably
- so-so
- serviceably
- creditably
- happily
- appropriately
- middlingly
- rightly
- seemly
- aptly
- fittingly
- suitably
- felicitously
- congruously
- satisfyingly
- effectively
- gratifyingly
- meetly
- efficiently
- decorously
- neatly
- effectually
- tidily
Antonyms & Near Antonyms
- bad
- poorly
- badly
- ill
- insufficiently
- inadequately
- intolerably
- unsatisfactorily
- unacceptably
- unbearably
- incorrectly
- awfully
- terribly
- inappropriately
- horribly
- dreadfully
- miserably
- deficiently
- disastrously
- deplorably
- indecently
- unsuitably
- horrendously
- horridly
2
as in yeah
used to express agreement OK, fine, I'll go to the party Synonyms & Similar Words
- yeah
- alright
- yes
- yep
- yea
- all right
- ay
- aye
- yo
- okeydokey
- okeydoke
- absolutely
- certainly
- exactly
- indeed
- assuredly
- positively
- undoubtedly
- unquestionably
- indisputably
Antonyms & Near Antonyms
- no
- nay
- scarcely
- no way
OK
3 of 4noun
variants or okay
as in approval
an acceptance of something as satisfactory our supervisor gave his OK on the project, so we can go ahead with it Synonyms & Similar Words
- approval
- blessing
- backing
- consent
- clean bill of health
- support
- imprimatur
- pat on the back
- vote
- approbation
- endorsement
- agreement
- favor
- nod
- ratification
- finalization
- sanction
- thumbs-up
- assent
- liking
- rubber stamp
- goodwill
- benediction
- satisfaction
- formalization
- acceptation
- cachet
- indorsement
- concurrence
- accession
- homologation
- countenance
Antonyms & Near Antonyms
- disapproval
- refusal
- criticism
- rejection
- dislike
- disfavor
- disapprobation
- dissatisfaction
- repudiation
- condemnation
- censure
- depreciation
- disparagement
- denunciation
- reproach
- opprobrium
- reprehension
- reprobation
- deprecation
OK
4 of 4verb
variants or okay
1
as in to approve
to give official acceptance of as satisfactory a judge will have to OK the search warrant Synonyms & Similar Words
- approve
- confirm
- ratify
- authorize
- sanction
- clear
- finalize
- warrant
- accept
- acknowledge
- formalize
- accredit
- affirm
- endorse
- validate
- approbate
- initial
- bless
- sign
- certify
- enable
- license
- permit
- homologate
- sanctify
- canonize
- allow
- legalize
- pass
- reapprove
- indorse
- sign off (on)
- rubber-stamp
- licence
Antonyms & Near Antonyms
- reject
- deny
- negative
- turn down
- disapprove
- ignore
- decline
- veto
- disallow
- forbid
- prohibit
- enjoin
- ban
- disregard
- refuse
- proscribe
- overlook
- neglect
- rebut
- illegalize
- interdict
- spurn
- rebuff
2
as in to accept
to have a favorable opinion of I'm glad that my friends OK'd my choice of girlfriend Synonyms & Similar Words
- accept
- like
- go for
- enjoy
- hold with
- favor
- recommend
- take kindly to
- approve (of)
- applaud
- tolerate
- support
- praise
- subscribe (to)
- countenance
- salute
- care (for)
- uphold
- laud
- endure
- stand by
- commend
- acclaim
- sustain
- assent (to)
- consent (to)
- concur (in)
- bear
- back (up)
Antonyms & Near Antonyms
- disapprove (of)
- criticize
- damn
- frown (on or upon)
- condemn
- disparage
- denounce
- hate
- dislike
- censure
- mind
- deprecate
- disfavor
- depreciate
- discountenance
- loathe
- oppose
- dissent (from)
- object (to)
- detest
- reprehend
- blacklist
- reprobate
- avian
- avian dinosaur
- avian dinosaurs
- avian diphtheria
- avian flu
- avian influenza
- avian monocytosis
- avian osteopetrosis
- avian pneumoencephalitis
- avianer
- avianest
- avianise
- avianised
- avianiseed
- avianiseing
- avianises
- avianising
- avianized
- avianizes
- avianizing
- avianner
- aviannest
- avians
- aviaphobe
- aviaphobes