1. adj. In the state of being active, functioning or operating.
2. adj. Performing according to schedule.
Are we still on for tonight?
Is the show still on?
3. adj. (chiefly UK, informal, usually negative) Acceptable, appropriate.
Example Sentences
I learned to fight so the bullies wouldn't pick on me anymore.
I don't want to pick on the juror but she was trying to control her cough there, but could not.