Where does “vast” come from?

vast (Middle Dutch) comes from Old Dutch fast, from Proto-West Germanic fast, from Proto-Germanic fastuz — fixed, firm, secure.

Ancestry of “vast”, step by step

StepLanguageWordMeaning
1Old Dutchfastfirm, strong
2Proto-West Germanicfastfixed, fast
3Proto-Germanicfastuzfixed, firm, secure

Words derived from “vast”

Every word from Proto-Germanic fastuz →Every word from Proto-West Germanic fast →Every word from Old Dutch fast →