Where does “которъ” come from?
которъ (Old East Slavic) comes from Proto-Slavic kotorъ, from Proto-Indo-European kʷóteros, from Proto-Indo-European kʷos, from Proto-Indo-European kʷ- — The primary interrogative root.
которъ (Old East Slavic): which, that, who, whom
Definitions
- which, that, who, whom