# boo vs boost

> English confusable word pair

## The two words

### boo
*intj · IPA /buː/ · frequency rank #8,014*
A loud exclamation intended to scare someone. Usually used when one has been hidden from the target, and then appears unexpectedly.

### boost
*noun · IPA /buːst/ · frequency rank #3,545*
A push from behind or below, as to one who is endeavoring to climb.

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