Where does “prostoduszny” come from?

prostoduszny (Polish) comes from Polish prosty, from Old Polish prosty, from Proto-Slavic prostъ, from Proto-Indo-European pro-sth₂o-.

prostoduszny (Polish): ingenuous, innocent

Definitions

  1. ingenuous, innocent

Ancestry of “prostoduszny”, step by step

prostoduszny traces back through two separate lines of ancestry.

via Polish prosty

StepLanguageWordMeaning
1Polishprostystraight; simple, easy; unsophisticated,...
2Old Polishprostystraight
3Proto-Slavicprostъsimple, straight
4Proto-Indo-Europeanpro-sth₂o-—

via Polish dusza

StepLanguageWordMeaning
1Polishduszasoul, spirit; heater; sound post
2Proto-Slavicdūšàsoul
Every word from Proto-Indo-European pro-sth₂o- →Every word from Proto-Slavic prostъ →Every word from Old Polish prosty →