Where does “Břetislav” come from?

Břetislav (Czech) comes from Old Czech Břěcislav, from Old Czech břěčěti, from Proto-Slavic bręčati — to buzz.

Ancestry of “Břetislav”, step by step

StepLanguageWordMeaning
1Old CzechBřěcislav—
2Old Czechbřěčětito make noise, to roar
3Proto-Slavicbręčatito buzz

Words derived from “Břetislav”

Every word from Proto-Slavic bręčati →Every word from Old Czech břěčěti →Every word from Old Czech Břěcislav →
Břetislav — Etymology, Origin & Word History | Etymology Explorer