Where does “cieniusieńko” come from?

cieniusieńko (Polish) comes from Polish cieniusieńki, from Polish cieniusi, from Polish cienki, from Proto-Slavic tьnъkъ, from Proto-Indo-European ténh₂us, from Proto-Indo-European tenh₂-, from Proto-Indo-European ten- — to stretch, to extend.

Ancestry of “cieniusieńko”, step by step

StepLanguageWordMeaning
1Polishcieniusieńki—
2Polishcieniusi—
3Polishcienkithin; inept; mediocre; weak; lame
4Proto-Slavictьnъkъthin
5Proto-Indo-Europeanténh₂usthin
6Proto-Indo-Europeantenh₂-to stretch, to extend
7Proto-Indo-Europeanten-to stretch, to extend
Every word from Proto-Indo-European ten- →Every word from Proto-Indo-European tenh₂- →Every word from Proto-Indo-European ténh₂us →