Where does “*faim” come from?

*faim (Proto-West Germanic) comes from Proto-Germanic faimaz, from Proto-Indo-European (s)poHy-m-os, from Proto-Indo-European (s)poH(y)-, from Proto-Indo-European speh₁- — to succeed, to prosper.

Ancestry of “*faim”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	faimaz	foam
2	Proto-Indo-European	(s)poHy-m-os	—
3	Proto-Indo-European	(s)poH(y)-	foam
4	Proto-Indo-European	speh₁-	to succeed, to prosper

Every word from Proto-Indo-European speh₁- →

*faim — Etymology, Origin & Word History | Etymology Explorer