To stop bothering someone about something. Would you please get off my back? I'm not going to the interview, and that's final!My uncle has finally gotten off my back about helping him out at the hardware store, thank goodness.
get off someone’s back
and get off someone’s case
in. to stop annoying someone. (Compare this with get on someone’s case.) I’ve had enough of you. Get off my back! Get off my case! You aren’t my mother.