köken: Etymology tree Proto-Slavic *gyb- Proto-Slavic *-ělь Proto-Slavic *gybělь Old Church Slavonic гꙑбѣль (gybělĭ) Bulgarian гибел (gibel) Proto-Indo-European *-nós Proto-Balto-Slavic *-inas Proto-Slavic *-ьnъ Old Church Slavonic -ьнь (-ĭnĭ) Bulgarian -ен (-en) Bulgarian гибелен From гибел (gibel) + -ен (-en).