# mightn't

> English word · Verb · IPA /ˈmaɪtn̩t/ · frequency rank #81,579

## Definitions
1. might not (negative auxiliary)

## Etymology
From might + n't.

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