# BRB vs bum

> English confusable word pair

## The two words

### BRB
*phrase · frequency rank #28,851*
Initialism of be right back.

### bum
*noun · IPA /bʌm/ · frequency rank #10,339*
The buttocks.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/brb-vs-bum