Where does “Ὕπνος” come from?
Ὕπνος (Ancient Greek) comes from Proto-Hellenic húpnos, from Proto-Indo-European supnós, from Proto-Indo-European swóp-r̥ ~ swép-n̥s, from Proto-Indo-European swep- — to sleep.
Ancestry of “Ὕπνος”, step by step
Words derived from “Ὕπνος”