Where does “dorosła” come from?

dorosła (Polish) comes from Polish dorosły, from Polish dorosnąć, from Polish rosnąć, from Serbo-Croatian -nac, from Czech co, from Old Czech čso, from Proto-Slavic česo, from Proto-Slavic čь — interrogative base.

Ancestry of “dorosła”, step by step

StepLanguageWordMeaning
1Polishdorosłyadult; third-person plural nonvirile past of...
2Polishdorosnąćto grow to a certain height or size
3Polishrosnąćto grow
4Serbo-Croatian-nac
5Czechcowhat; that; isn't it so, don't you think?
6Old CzechčsoInterrogative pronoun; what
7Proto-Slavicčesowhat (interrogative)
8Proto-Slavicčьwhat; alternative form of *čьto
9Proto-Balto-Slavickiwhat
10Proto-Indo-Europeankʷídneuter nominative/accusative singular of *kʷís
11Proto-Indo-Europeankʷíswho, what; who, which, that; which, what
12Proto-Indo-Europeankʷi-interrogative base
Every word from Proto-Indo-European kʷi-Every word from Serbo-Croatian -nacEvery word from Proto-Indo-European kʷís
dorosła — Etymology, Origin & Word History | Etymology Explorer