Where does “Bačiulis” come from?

Bačiulis (Lithuanian) comes from Lithuanian Bačys, from Belarusian ба́ця, from Old East Slavic батѧ, from Proto-Slavic batę, from Proto-Slavic *batь — elder relative or respected acquaintance as a honorific.

Ancestry of “Bačiulis”, step by step

StepLanguageWordMeaning
1LithuanianBačys—
2Belarusianба́цяfather, dad
3Old East Slavicбатѧfather
4Proto-Slavicbatęolder brother; daddy
5Proto-Slavic*batьelder relative or respected acquaintance as a honorific
Every word from Proto-Slavic *batь →Every word from Proto-Slavic batę →Every word from Old East Slavic батѧ →