Where does “fastenen” come from?

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

Ancestry of “fastenen”, step by step

StepLanguageWordMeaning
1Old Englishfæstnianto fasten or fix; to establish
2Proto-West Germanicfastinōnto fasten, to make fast
3Proto-West Germanicfastfixed, fast
4Proto-Germanicfastuzfixed, firm, secure

Words derived from “fastenen

Every word from Proto-Germanic fastuzEvery word from Proto-West Germanic fastEvery word from Proto-West Germanic fastinōn