Where does “тъст” come from?

тъст (Bulgarian) comes from Proto-Slavic tьstь, from Proto-Balto-Slavic *tíśtis, from Proto-Indo-European teḱ- — to sire, beget.

тъст (Bulgarian): wife's father

Definitions

  1. wife's father

Ancestry of “тъст”, step by step

StepLanguageWordMeaning
1Proto-Slavictьstьfather-in-law
2Proto-Balto-Slavic*tíśtis—
3Proto-Indo-Europeanteḱ-to sire, beget
Every word from Proto-Indo-European teḱ- →Every word from Proto-Balto-Slavic *tíśtis →Every word from Proto-Slavic tьstь →