Where does “warn” come from?

warn (Middle High German) comes from Old High German warōn, from Proto-Germanic warōną, from Proto-Germanic waraz, from Proto-Iranian warājáh, from Proto-Indo-Iranian warāȷ́ʰás — boar.

Ancestry of “warn”, step by step

StepLanguageWordMeaning
1Old High Germanwarōnto be wary; to guard, keep, take care
2Proto-Germanicwarōnąto watch, to protect
3Proto-Germanicwarazcautious; heedful; wary; watchful
4Proto-Iranianwarājáhwild boar
5Proto-Indo-Iranianwarāȷ́ʰásboar

Words derived from “warn”

Every word from Proto-Indo-Iranian warāȷ́ʰás →Every word from Proto-Iranian warājáh →Every word from Proto-Germanic waraz →