okay

nouns

an endorsement
"they gave us the O.K. to go ahead"

verbs

give sanction to
"I approve of his educational policies"

adjectives

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"

adverbs

in a satisfactory or adequate manner
"she'll do okay on her own"; "held up all right under pressure"; (`alright' is a nonstandard variant of `all right')