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unfast

Today it means: To loose; release. Full definition →

Middle English unfasten

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unfast · verb¹

Middle English · inherited fromunfasten
English todayunfast

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

unfast · adjective²

From un- + fast.

Etymology from Wiktionary, CC BY-SA 4.0.