Where does “cârsteiaș” come from?

cârsteiaș (Romanian) comes from Romanian -aș, from Proto-Slavic -ašь.

Ancestry of “cârsteiaș”, step by step

StepLanguageWordMeaning
1Romanian-așdiminutive suffix
2Proto-Slavic-ašь—
Every word from Proto-Slavic -ašь →Every word from Romanian -aș →
cârsteiaș — Etymology, Origin & Word History | Etymology Explorer