Where does “hūfōn” come from?

hūfōn (Old High German) comes from Proto-Germanic haupaz, from Proto-Indo-European koupos — hill.

Ancestry of “hūfōn”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	haupaz	a heap, pile; a crowd, throng
2	Proto-Indo-European	koupos	hill

hūfōn — Etymology, Origin & Word History | Etymology Explorer