Thesaurus.com
Dictionary.com
Definitions

OK

[oh-key, oh-key, oh-key] / ˈoʊˈkeɪ, ˌoʊˈkeɪ, ˈoʊˌkeɪ /
ADJECTIVE
acceptable
Synonyms
STRONG
average common cool fair hip kosher large moderate okay pleasing standard swell welcome
WEAK
A-OK adequate admissible all right big cooking with gas copacetic decent delightful fairish goodish hep hunky-dory in the swim on the ball on the beam passable peachy keen pleasant respectable right on satisfactory sufficient tolerable trendy unexceptional unobjectionable up to code up to snuff
Antonyms
STRONG
abnormal bad extraordinary extreme unacceptable unreasonable unusual
ADVERB
yes
Synonyms
STRONGEST
fine okay
STRONG
affirmative amen good true yea
WEAK
absolutely agreed all right assuredly aye beyond a doubt by all means certainly definitely even so exactly gladly good enough granted indubitably just so most assuredly naturally of course positively precisely roger sure thing surely undoubtedly unquestionably very well willingly without fail yep
NOUN
permission
Synonyms
STRONGEST
okay
STRONG
acceptance acknowledgment acquiescence admission agreement allowance approbation approval assent authorization avowal canonization concession concurrence condonation consent dispensation empowerment endorsement freedom imprimatur indulgence leave letting liberty license permit privilege promise recognition sanctification sanction sufferance tolerance toleration verification warrant
WEAK
carte blanche condonance rubber stamp stamp of approval
Antonyms
STRONG
break denial difference disagreement disapproval dissent imprisonment incarceration limitation opposition prohibition protest refusal rejection repudiation restraint restriction veto
NOUN
acceptance
Synonyms
STRONGEST
okay permission yes
STRONG
acknowledgment acquiescence acquiring admission agreement approval assent compliance consent cooperation getting go ahead nod receipt reception recognition undertaking
WEAK
accepting gaining green light obtaining receiving securing taking on
Antonyms
STRONGEST
denial veto
STRONG
disagreement disapproval dissension dissent opposition refusal rejection
VERB
permit
Synonyms
STRONG
boost buy charter consent franchise grant have humor leave let license okay pass privilege sanction sign warrant
WEAK
abet accede accept acquiesce admit agree allow approbate approve authorize bless blink at concede concur condone empower enable endorse endure give a thumbs-up give leave give permission go for indulge let pass sanctify say yes shake on sign off on suffer take kindly to tolerate wink at
Antonyms
STRONG
deny disagree disapprove hinder hold keep prevent refuse sell veto

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

That’s OK, Isern said — it may provide an additional opening.

From MarketWatch • Apr. 17, 2026

Waiters rushed over asking if I was OK.

From Los Angeles Times • Apr. 17, 2026

“Knock on wood, hope that he’s OK, I’m OK.”

From The Wall Street Journal • Apr. 15, 2026

Even if you’ve already filed for an extension, it’s OK to file an income-tax return on time, according to Lisa Greene-Lewis, a CPA and tax expert at TurboTax.

From MarketWatch • Apr. 14, 2026

Pierre knows how it feels when your insides are falling apart, even if everything seems OK on the outside.

From "South of Somewhere" by Kalena Miller

Vocabulary lists containing OK

Scrabble: Two-Letter Words

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!