Where does “sumptueux” come from?

sumptueux (Middle French) comes from Latin sumptuōsus, from Latin sūmptus, from Latin sumō, from Latin sub-, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

Ancestry of “sumptueux”, step by step

Step	Language	Word	Meaning
1	Latin	sumptuōsus	—
2	Latin	sūmptus	—
3	Latin	sumō	—
4	Latin	sub-	sub-
5	Proto-Indo-European	upó	under, below
6	Proto-Indo-European	h₃ewp-	—

Every word from Proto-Indo-European h₃ewp- →

sumptueux — Etymology, Origin & Word History | Etymology Explorer