Definition of OK exclamation from the Oxford Advanced American Dictionary



    (also okay)exclamation
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  1. 1used to express agreement or give permission for something “Shall we go for a walk?” “OK.” (computing) Click on OK to terminate the application.
  2. 2used to attract someone's attention or to introduce a comment Okay, let's go.
  3. 3 used to make sure that someone agrees with you or understands you The meeting's at 2, OK? I'll do it my way, OK?
  4. 4 used to stop people from arguing with you or criticizing you OK, so I was wrong. I'm sorry.
See the Oxford Advanced Learner's Dictionary entry: OK