# lose one's cool

> English word · Verb · IPA /ˈluːz wʌnz ˈkuːl/

## Definitions
1. To become upset or disconcerted; to lose one's temper.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/lose-one-s-cool