o.k. Meaning, Definition & Usage

1. noun an endorsement
   okey; OK; okay; okeh.
   
   • they gave us the O.K. to go ahead
2. verb give sanction to
   okay; approve; sanction.
   
   • I approve of his educational policies
3. adjective satellite being satisfactory or in satisfactory condition
   all right; okay; hunky-dory; ok; fine.
   
   • 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
4. adverb in a satisfactory or adequate manner; (`alright' is a nonstandard variant of `all right')
   alright; all right; okay.
   
   • she'll do okay on her own
   • held up all right under pressure

WordNet