'OK' definitions:

Definition of 'OK'

From: WordNet
adverb
An expression of agreement normally occurring at the beginning of a sentence [syn: very well, fine, alright, all right, OK]
adjective
Being satisfactory or in satisfactory condition; "an all- right movie"; "the passengers were shaken up but are all right"; "is everything all right?"; "everything's fine"; "things are okay"; "dinner and the movies had been fine"; "another minute I'd have been fine" [syn: all right, fine, o.k., ok, okay, hunky-dory]
noun
A state in south central United States [syn: Oklahoma, Sooner State, OK]
noun
An endorsement; "they gave us the O.K. to go ahead" [syn: O.K., OK, okay, okey, okeh]

Synonyms of 'OK'

From: Moby Thesaurus

Words containing 'OK'