o.k.

For other uses, see OK and Okay (disambiguation). Okay is a term of approval, assent, or acknowledgment, often written as OK or O.K.. (See also AOK.) When used to describe the quality of a thing, it denotes acceptability. However, its usage can also be strongly approving; as with most slang, its usage is determined by context.
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Noun
1. an endorsement; "they gave us the O.K. to go ahead"
(synonym) OK, okay, okey, okeh
(hypernym) sanction, countenance, endorsement, indorsement, warrant, imprimatur
(derivation) approve, O.K., okay, sanction
Verb
1. give sanction to; "I approve of his educational policies"
(synonym) approve, okay, sanction
(hypernym) authorize, authorise, pass, clear
(hyponym) sanction
(derivation) O.K., OK, okay, okey, okeh
Adverb
1. 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')
(synonym) okay, all right, alright
(classification) colloquialism

Adjective
1. 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"
(synonym) all right, fine, ok, okay, hunky-dory
(similar) satisfactory
(classification) colloquialism

O.K., okay, authorization, approval, agreement

all right, O.K., fine, good

interj. (also: o.k.) okay, all right