Where does “synek” come from?

synek (Czech) comes from Czech syn, from Old Czech syn, from Proto-Slavic synъ, from Proto-Balto-Slavic sū́ˀnus, from Proto-Indo-European *suhnús.

Ancestry of “synek”, step by step

StepLanguageWordMeaning
1Czechsynson
2Old Czechsynson
3Proto-Slavicsynъson
4Proto-Balto-Slavicsū́ˀnusson
5Proto-Indo-European*suhnús—
Every word from Proto-Indo-European *suhnús →Every word from Proto-Balto-Slavic sū́ˀnus →Every word from Proto-Slavic synъ →
synek — Etymology, Origin & Word History | Etymology Explorer