1. Home
2. Idioms
3. on case

on case

---

---

*on someone's case

 and *on someone's back

Inf. harassing someone about a personal problem; annoying someone. (*Typically: be ~; get ~; keep ~.) I'll get on Tom's case about being late so much. I'm sorry, I won't get on your case anymore.

See also: case, on

on somebody's case

telling someone what to do or criticizing what they do You're always on my case about my smoking.

Usage notes: often used with get: Perry had been drinking a lot lately, and Beth started to get on his case.

Related vocabulary: get after somebody

See also: case, on

on (someone's) case

Persistently nagging or urging someone to do something.

See also: case, on