Where does “koszuleczka” come from?

koszuleczka (Polish) comes from Polish koszulka, from Polish koszula, from Proto-Slavic košuľa, from Latin casula, from Latin -ulus, from Proto-Italic -olos, from Proto-Italic -elos, from Proto-Indo-European -e-lós — Forms agent nouns from verbal roots.

Ancestry of “koszuleczka”, step by step

StepLanguageWordMeaning
1PolishkoszulkaT-shirt; jacket, wrapper
2Polishkoszulashirt
3Proto-Slavickošuľashirt
4Latincasulahut, small cottage; rural property, small farm;...
5Latin-ulusUsed to form a diminutive of a noun, indicating...
6Proto-Italic-olos
7Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
8Proto-Indo-European-e-lós
9Proto-Indo-European-lósForms agent nouns from verbal roots
Every word from Proto-Indo-European -lósEvery word from Latin -ulusEvery word from Latin casula