Where does “unfastener” come from?

unfastener (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.

unfastener (English): One who or that which unfastens

Definitions

  1. One who or that which unfastens

Ancestry of “unfastener”, step by step

unfastener 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 ER

StepLanguageWordMeaning
1EnglishERThe statistic "Earned Run"; Initialism of...
2Turkisherearly; brave; man, male
3Ottoman Turkishایرsaddle, a seat for a rider placed on the back of a horse or other animal
4Old Anatolian Turkishایرearly, at a time in advance of the usual or expected event
5Proto-Turkicēdersaddle
Every word from Proto-Germanic fastuzEvery word from Proto-West Germanic fastEvery word from Proto-West Germanic fastinōn