Where does “мой” come from?

мой (Belarusian) comes from Proto-Slavic mojь, from Proto-Indo-European méynos, from Proto-Indo-European mei — to fix, to build fortifications or fences.

мой (Belarusian): my, mine

Definitions

  1. my, mine

Ancestry of “мой”, step by step

StepLanguageWordMeaning
1Proto-Slavicmojьmy
2Proto-Indo-Europeanméynosmy; mine
3Proto-Indo-Europeanmeito fix, to build fortifications or fences
Every word from Proto-Indo-European mei →Every word from Proto-Indo-European méynos →Every word from Proto-Slavic mojь →