Where does “sъ̀nъ” come from?
sъ̀nъ (Proto-Slavic) comes from Proto-Balto-Slavic supnas, from Proto-Indo-European supnós, from Proto-Indo-European swóp-r̥ ~ swép-n̥s, from Proto-Indo-European swep- — to sleep.
sъ̀nъ (Proto-Slavic): sleep, dream
Ancestry of “sъ̀nъ”, step by step
Words derived from “sъ̀nъ”