Where does “*hwáfnah” come from?

*hwáfnah (Proto-Iranian) comes from Proto-Indo-Iranian swápnas, from Proto-Indo-European swépnos, from Proto-Indo-European swopnos, from Proto-Indo-European swep- — to sleep.

Ancestry of “*hwáfnah”, step by step

StepLanguageWordMeaning
1Proto-Indo-Iranianswápnassleep, sleeping; dreaming
2Proto-Indo-Europeanswépnossleep, slumber
3Proto-Indo-Europeanswopnosdream
4Proto-Indo-Europeanswep-to sleep

Words derived from “*hwáfnah

Every word from Proto-Indo-European swep-Every word from Proto-Indo-European swopnosEvery word from Proto-Indo-European swépnos