unfast

== English == === Etymology 1 === From Middle English unfasten, unvesten, onfesten, equivalent to un- +‎ fast. ==== Verb ==== unfast (third-person singular simple present unfasts, present participle unfasting, simple past and past participle unfasted) (transitive) To loose; release. === Etymology 2 === From un- +‎ fast. ==== Adjective ==== unfast (comparative more unfast, superlative most unfast) Not fast or safe; not secure. ===== Derived terms ===== unfastness === Anagrams === fusant, tufans