on the ball
This page is about the idiom on the ballINFORMAL
If you're on the ball, you're alert and you know what's going on around you.
- I didn't get much sleep last night so I'm not really on the ball today.
- My brother is always on the ball, so it's hard to trick him or catch him unawares.
See Idiom of the Day today
Contributor: Matt Errey