Definitions for: Unfasten

[v] become undone or untied; "The shoelaces unfastened"
[v] cause to become undone; "unfasten your belt"

Webster (1913) Definition: Un*fas"ten, v. t. [1st pref. un- + fasten.]
To loose; to unfix; to unbind; to untie.

Antonyms: fasten, fix, secure

See Also: open, open up, unbend, unchain, undo, unfasten, unzip

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