Polish prosty

← Proto-Slavic *prostъ (inherited)

→ Czech prostý (cognate)

→ Lower Sorbian pšosty (cognate)

→ Polish prostak (suffix)

→ Polish prostopadły (affix)

→ Polish prostokąt (affix)

→ Polish prosto (suffix)

→ Polish prostota (affix)

→ Polish prostoduszny (affix)

→ Polish uprościć (affix)

→ Polish prostować (affix)

→ Polish prostolinijny (link)