# isn't

> English word · Verb · IPA /ˈɪz.ənt/ · frequency rank #376

## Definitions
1. Contraction of is + not (negative auxiliary).

## Etymology
From is + -n't.

## Easily confused with
- **int** (https://plainspell.com/en/vs/int-vs-isn-t)
- **init** (https://plainspell.com/en/vs/init-vs-isn-t)
- **islet** (https://plainspell.com/en/vs/islet-vs-isn-t)
- **innit** (https://plainspell.com/en/vs/innit-vs-isn-t)

## Common misspellings (7)
`ins't`, `is'nt`, `isn'tt`, `isnn't`, `isnt'`, `issn't`, `sin't`

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