Where does “langsum” come from?

langsum (Old Frisian) comes from Proto-West Germanic langasam, from Proto-West Germanic lang, from Proto-Germanic langaz, from Proto-Indo-European dlongʰos — long.

Ancestry of “langsum”, step by step

StepLanguageWordMeaning
1Proto-West Germaniclangasamlengthy; drawn-out, long-lasting, extended,...
2Proto-West Germaniclanglong
3Proto-Germaniclangazlong
4Proto-Indo-Europeandlongʰoslong

Words derived from “langsum”

Every word from Proto-Indo-European dlongʰos →Every word from Proto-Germanic langaz →Every word from Proto-West Germanic lang →
langsum — Etymology, Origin & Word History | Etymology Explorer