Where does “ясно” come from?

ясно (Bulgarian) comes from Bulgarian я́сен, from Proto-Slavic ěsnъ, from Proto-Slavic ěsknъ, from Proto-Balto-Slavic áiˀšknas.

ясно (Bulgarian): clearly

Definitions

  1. clearly

Ancestry of “ясно”, step by step

StepLanguageWordMeaning
1Bulgarianя́сенclear, bright, cloudless of weather, sky, or light: not dark, gloomy, or cloudy
2Proto-Slavicěsnъclear, bright; clear, serene; clear, lucid,...
3Proto-Slavicěsknъ—
4Proto-Balto-Slavicáiˀšknas—
Every word from Proto-Balto-Slavic áiˀšknas →Every word from Proto-Slavic ěsknъ →Every word from Proto-Slavic ěsnъ →