Where does “простость” come from?

простость (Old Church Slavonic) comes from Old Church Slavonic простъ, from Proto-Slavic prostъ, from Proto-Indo-European pro-sth₂o-.

простость (Old Church Slavonic): open-heartedness

Definitions

  1. open-heartedness

Ancestry of “простость”, step by step

StepLanguageWordMeaning
1Old Church Slavonicпростъsimple, free, straight
2Proto-Slavicprostъsimple, straight
3Proto-Indo-Europeanpro-sth₂o-—
Every word from Proto-Indo-European pro-sth₂o- →Every word from Proto-Slavic prostъ →Every word from Old Church Slavonic простъ →