1. A phrase used to ask someone if they are feeling fine, especially when one suspects they may not be. I heard you were sick earlier this week—are you feeling OK now? Feeling OK today, Tim? You look a little under the weather.
2. Feeling fine. Yeah, I'm feeling OK, just tired.
(I'm) feeling okay.
I am doing well.; I am feeling well. Alice: How are you feeling? Jane: I'm feeling okay. John: How are things going? Fred: Feeling okay.