Where does “ciemniutki” come from?

ciemniutki (Polish) comes from Polish Ciemny, from Old Polish ciemny, from Proto-Slavic tьmьnъ, from Proto-Slavic tьma, from Proto-Balto-Slavic timāˀ, from Proto-Indo-European tēmH- — dark.

Ancestry of “ciemniutki”, step by step

StepLanguageWordMeaning
1PolishCiemnydark
2Old Polishciemnydark
3Proto-Slavictьmьnъdark
4Proto-Slavictьmadark, darkness
5Proto-Balto-Slavictimāˀdarkness
6Proto-Indo-EuropeantēmH-dark
Every word from Proto-Indo-European tēmH- →Every word from Proto-Balto-Slavic timāˀ →Every word from Proto-Slavic tьma →