# non est factum

> English word · Phrase

## Definitions
1. A defence in contract law that allows a signing party to escape performance of an agreement that is fundamentally different from what they intended to execute or sign.

## Etymology
Latin, meaning "it is not (his) deed".

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