# unfast

> English word · Verb

## Definitions
1. To loose; release.

## Etymology
From Middle English unfasten, unvesten, onfesten, equivalent to un- + fast.

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