Where does “глупак” come from?

глупак (Bulgarian) comes from Bulgarian глуп, from Proto-Slavic glũpъ — stupid, foolish.

глупак (Bulgarian): fool, simpleton, bonehead

Definitions

  1. fool, simpleton, bonehead

Ancestry of “глупак”, step by step

StepLanguageWordMeaning
1Bulgarianглупstupid
2Proto-Slavicglũpъstupid, foolish
Every word from Proto-Slavic glũpъ →Every word from Bulgarian глуп →
глупак — Etymology, Origin & Word History | Etymology Explorer