Where does “spūmō” come from?

spūmō (Latin) comes from Latin spūma, 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 “spūmō”, step by step

Step	Language	Word	Meaning
1	Latin	spūma	—
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- →

spūmō — Etymology, Origin & Word History | Etymology Explorer