"okay" in the noun sense
1. O.K., OK, okay, okey, okeh
"they gave us the O.K. to go ahead"
"okay" in the verb sense
1. approve, O.K., okay, sanction
give sanction to
"I approve of his educational policies"
"okay" in the adjective sense
1. all right, fine, o.k., ok, okay, hunky-dory, cool
being satisfactory or in satisfactory condition
"an all-right movie"
"the passengers were shaken up but are all right"
"is everything all right?"
"things are okay"
"dinner and the movies had been fine"
"another minute I'd have been fine"
"okay" in the adverb sense
1. okay, O.K., all right, alright
in a satisfactory or adequate manner (`alright' is a nonstandard variant of `all right')
"she'll do okay on her own"
"held up all right under pressure"
Source: WordNet® (An amazing lexical database of English)
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