Where does “żołnierz” come from?
żołnierz (Polish) comes from Middle High German soldener, from Medieval Latin soldarius, from Late Latin solidus, from Proto-Italic soliðos, from Proto-Indo-European solh₂-i-dʰ-o-s, from Proto-Indo-European solh₂- — whole.
żołnierz (Polish): soldier
Ancestry of “żołnierz”, step by step