OK Definition

ōkā
okays
adjective
Correct; acceptable.
It's OK to wear casual dress to the party.
Webster's New World
In satisfactory or good condition.
Are you feeling OK today?
Webster's New World
Adequate; satisfactory; good enough.
The entree was OK, but dessert was excellent.
Webster's New World
In proper or satisfactory operational or working order.
Is the battery OK?
American Heritage
Comfortable; satisfied.
I'm OK with waiting until tomorrow.
Webster's New World
noun
Approval; endorsement.
Webster's New World
Antonyms:
adverb
Yes; very well.
OK, I'll go first.
Webster's New World
Acceptably; satisfactorily.
Am I dressed OK for this restaurant?
Webster's New World
Is that acceptable, agreeable, etc. to you?
We'll have dinner after the movie, OK?
Webster's New World
Antonyms:
interjection
Yes; good, agreed, etc.
“Let's leave right away!” “OK!
Webster's New World
Used to express comprehension or acknowledgment of another's statement, explanation, etc.
“I'll put your umbrella back in the closet.” “OK.”
Webster's New World

An utterance expressing exasperation, similar to "all right!"

OK! I get it! Stop nagging me!
Wiktionary
Used to introduce a sentence in order to draw attention to the importance of what is being said.
OK, I'm thinking of a number...
Wiktionary
verb
To approve or endorse, as by writing “OK” on.
Webster's New World
abbreviation
Oklahoma.
Webster's New World
pronoun

Acronym of Oklahoma, a state of the United States of America.

Wiktionary

Other Word Forms of OK

Noun

Singular:
OK
Plural:
oks

Origin of OK

  • Of unclear origin. Wikipedia lists several possibilities. it may be an abbreviation of a comical spelling of "all correct" as "oll korrect", such as first appeared in print in The Boston Morning Post on March 23, 1839, as part of a fad for similar fanciful abbreviations in the United States during the late 1830s.

    From Wiktionary

  • Abbreviation of oll korrect slang respelling of all correct

    From American Heritage Dictionary of the English Language, 5th Edition