Where does “pokorniutki” come from?

pokorniutki (Polish) comes from English Pokorny, from Czech Pokorný, from Proto-Slavic pokorьnъ, from Proto-Slavic koriti, from Proto-Balto-Slavic kar-, from Proto-Indo-European kar- — hard.

Ancestry of “pokorniutki”, step by step

StepLanguageWordMeaning
1EnglishPokorny
2CzechPokornýhumble
3Proto-Slavicpokorьnъ
4Proto-Slavickoritito reproach
5Proto-Balto-Slavickar-
6Proto-Indo-Europeankar-hard
Every word from Proto-Indo-European kar-Every word from Proto-Balto-Slavic kar-Every word from Proto-Slavic koriti