# backout

> English word · Noun

## Definitions
1. A reversal or undoing of tasks previously done (often in reverse order).
2. A reversed countdown (i.e. ascending numbers) in response to problems leading up to a launch.

## Etymology
Deverbal from back out.

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