Definition from macmillandictionary.com
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The food was OK, but nothing special.
We didn’t start on time, but everything turned out OK anyway.
Are you saying it’s OK to lie to your children?
The teacher said it was OK for me to leave class early.
It’s OK by me if they come with us.
The doctors say he’ll be OK in a few weeks.
Are you OK? You look tired.
Paul is an OK kind of guy.
I like Jim. He’s OK.
I think I did OK in the exam.
Things around here were going OK until you arrived.