be right back
Also found in: Acronyms.
be right back
As phrase used when one has to leave but intends to return very soon. Be right back, someone's knocking at the door. I have to use the bathroom—be right back.
be right back
and BRB phr. & comp. abb. I will return to communicating shortly. Excuse me, BRB. He’s out of pocket, but he’ll be right back.