Where does “sworen” come from?

sworen (Old English) comes from Proto-West Germanic swaran, from Proto-Germanic swaranaz, from Proto-Germanic swarjaną, from Proto-Indo-European swēr- — heavy.

Ancestry of “sworen”, step by step

StepLanguageWordMeaning
1Proto-West Germanicswaran—
2Proto-Germanicswaranaz—
3Proto-Germanicswarjanąto swear
4Proto-Indo-Europeanswēr-heavy

Words derived from “sworen”

Every word from Proto-Indo-European swēr- →Every word from Proto-Germanic swarjaną →Every word from Proto-Germanic swaranaz →
sworen — Etymology, Origin & Word History | Etymology Explorer