Where does “ciężeńki” come from?

ciężeńki (Polish) comes from Polish Ciężki, from Old Polish ciężki, from Proto-Slavic tęžьkъ, from Lithuanian tingus, from Proto-Indo-European tengʰ-, from Proto-Indo-European ten- — to stretch, to extend.

Ancestry of “ciężeńki”, step by step

StepLanguageWordMeaning
1PolishCiężkiheavy
2Old Polishciężkiheavy
3Proto-Slavictęžьkъheavy
4Lithuaniantinguslazy
5Proto-Indo-Europeantengʰ-to pull; to be heavy, difficult
6Proto-Indo-Europeanten-to stretch, to extend
Every word from Proto-Indo-European ten- →Every word from Proto-Indo-European tengʰ- →Every word from Lithuanian tingus →