# undoing

> English word · Noun · IPA /ʌnˈduːɪŋ/ · frequency rank #26,292

## Definitions
1. The act of loosening or unfastening
2. Ruin; defeat, (also) that which causes defeat or ruin.
3. Annulment; reversal

## Etymology
From Middle English undoinge, undoynge, ondoynge; equivalent to undo + -ing.

## Easily confused with
- **undone** (https://plainspell.com/en/vs/undoing-vs-undone)
- **uniting** (https://plainspell.com/en/vs/undoing-vs-uniting)
- **undying** (https://plainspell.com/en/vs/undoing-vs-undying)

## Common misspellings (10)
`nudoing`, `udnoing`, `unddoing`, `undiong`, `undoign`, `undoingg`, `undoinng`, `undonig`, `unndoing`, `unoding`

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