Where does “господин” come from?
господин (Russian) comes from Proto-Slavic gospodinъ, from Proto-Slavic gospodь, from Proto-Balto-Slavic gastipatis, from Proto-Indo-European gʰóstipotis, from Proto-Indo-European pótis, from Proto-Indo-European ph₃tis, from Proto-Indo-European peh₃- — to drink.
господин (Russian): gentleman; mister; Mr
Ancestry of “господин”, step by step