Where does “ер” come from?

ер (Bulgarian) comes from Old Church Slavonic ѥръ.

ер (Bulgarian): yer (Slavic languages)

Definitions

  1. yer (Slavic languages)

Ancestry of “ер”, step by step

StepLanguageWordMeaning
1Old Church Slavonicѥръ
Every word from Old Church Slavonic ѥръ
ер — Etymology, Origin & Word History | Etymology Explorer