Where does “wēpin” come from?

wēpin (Old Frisian) comes from Proto-Germanic wēpną, from Proto-Indo-European wēbnom.

Ancestry of “wēpin”, step by step

StepLanguageWordMeaning
1Proto-Germanicwēpnąweapon
2Proto-Indo-Europeanwēbnom—
Every word from Proto-Indo-European wēbnom →Every word from Proto-Germanic wēpną →
wēpin — Etymology, Origin & Word History | Etymology Explorer