Where does “gumi” come from?

gumi (Icelandic) comes from Old Norse gumi, from Proto-Germanic gumô, from Proto-Indo-European dʰǵʰm̥mō, from Proto-Indo-European dʰéǵʰōm, from Proto-Indo-European -ōm, from Proto-Indo-European -mi.

gumi (Icelandic): a man

Definitions

a man

Ancestry of “gumi”, step by step

Step	Language	Word	Meaning
1	Old Norse	gumi	a man
2	Proto-Germanic	gumô	man
3	Proto-Indo-European	dʰǵʰm̥mō	earthling, human
4	Proto-Indo-European	dʰéǵʰōm	earth
5	Proto-Indo-European	-ōm	emphatic suffix or postpositive particle
6	Proto-Indo-European	-mi	—

Every word from Proto-Indo-European -mi →Every word from Proto-Indo-European -ōm →Every word from Proto-Indo-European dʰéǵʰōm →