Where does “hwap-” come from?

hwap- (Proto-Iranian) comes from Proto-Indo-Iranian swap-, from Proto-Indo-European swep- — to sleep.

Ancestry of “hwap-”, step by step

StepLanguageWordMeaning
1Proto-Indo-Iranianswap-sleep, to sleep; dreaming
2Proto-Indo-Europeanswep-to sleep

Words derived from “hwap-”

Every word from Proto-Indo-European swep- →Every word from Proto-Indo-Iranian swap- →