Where does “unfastened” come from?

unfastened (English) comes from English unfasten, from English fasten, from Middle English fastenen, from Old English fæstnian, from Proto-West Germanic fastinōn, from Proto-West Germanic fast, from Proto-Germanic fastuz — fixed, firm, secure.

unfastened (English): Not fastened; past participle of unfasten

Definitions

  1. Not fastened; past participle of unfasten

Ancestry of “unfastened”, step by step

unfastened traces back through two separate lines of ancestry.

via English unfasten

StepLanguageWordMeaning
1EnglishunfastenTo detach from any connecting agency or link; to...
2EnglishfastenTo attach or connect in a secure manner; To cause...
3Middle Englishfastenen
4Old Englishfæstnianto fasten or fix; to establish
5Proto-West Germanicfastinōnto fasten, to make fast
6Proto-West Germanicfastfixed, fast
7Proto-Germanicfastuzfixed, firm, secure

via English fastened

StepLanguageWordMeaning
1Englishfastenedsimple past tense and past participle of fasten
Every word from Proto-Germanic fastuzEvery word from Proto-West Germanic fastEvery word from Proto-West Germanic fastinōn
unfastened — Etymology, Origin & Word History | Etymology Explorer