Where does “pełniutki” come from?

pełniutki (Polish) comes from Polish pełny, from Proto-Slavic pьlnъ, from Proto-Balto-Slavic pílˀnas, from Proto-Indo-European pl̥h₁nós, from Proto-Indo-European pleh₁- — to fill.

Ancestry of “pełniutki”, step by step

StepLanguageWordMeaning
1Polishpełnyfull
2Proto-Slavicpьlnъfull
3Proto-Balto-Slavicpílˀnasfull
4Proto-Indo-Europeanpl̥h₁nósfull
5Proto-Indo-Europeanpleh₁-to fill
Every word from Proto-Indo-European pleh₁- →Every word from Proto-Indo-European pl̥h₁nós →Every word from Proto-Balto-Slavic pílˀnas →