say it: oh-KAY
okay is a noun, verb, adjective and adverb meaning "an endorsement". It carries 4 recorded senses.
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”
colloquialism
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for okay come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.