# mouth off

> English word · Verb

## Definitions
1. To complain or otherwise express oneself in a loud, immoderate manner.
2. To talk impudently, especially to one's superior.

## Etymology
From mouth + off.

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