Where does “бѣсъ” come from?

бѣсъ (Old East Slavic) comes from Proto-Slavic běsъ, from Proto-Balto-Slavic baiˀsás, from Proto-Indo-European bʰoyh₂-dʰh₁-so-s, from Proto-Indo-European bʰeyh₂- — to fear, be afraid; to strike, hit; to hew, cut.

бѣсъ (Old East Slavic): demon, evil spirit

Definitions

  1. demon, evil spirit

Ancestry of “бѣсъ”, step by step

StepLanguageWordMeaning
1Proto-Slavicběsъrage, amok → rabies; demon, evil spirit
2Proto-Balto-Slavicbaiˀsásdemon, evil spirit
3Proto-Indo-Europeanbʰoyh₂-dʰh₁-so-s
4Proto-Indo-Europeanbʰeyh₂-to fear, be afraid; to strike, hit; to hew, cut
Every word from Proto-Indo-European bʰeyh₂-Every word from Proto-Indo-European bʰoyh₂-dʰh₁-so-sEvery word from Proto-Balto-Slavic baiˀsás