Where does “Dniepr” come from?

Dniepr (Polish) comes from Russian Днепр, from Old East Slavic Дънѣпръ, from Proto-Slavic Dъněprъ.

Ancestry of “Dniepr”, step by step

StepLanguageWordMeaning
1RussianДнепрDnieper
2Old East SlavicДънѣпръ—
3Proto-SlavicDъněprъ—
Every word from Proto-Slavic Dъněprъ →Every word from Old East Slavic Дънѣпръ →Every word from Russian Днепр →
Dniepr — Etymology, Origin & Word History | Etymology Explorer