Ok has 13 different meanings across 5 categories:
Noun · Adjective · Adverb · Intj · Proper Noun
To approve.
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"
All right, permitted.
Alternative letter-case form of OK
Used to indicate acknowledgement or acceptance.
Alternative form of OK (okeh)
United States postal abbreviation for Oklahoma, a state of the United States of America.
Alternative form of Ok. Abbreviation of Oklahoma.