Where does “subnervandus” come from?

subnervandus (Latin) comes from Latin subnervo, from Latin sub, from Proto-Italic supo, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

Definitions

Ancestry of “subnervandus”, step by step

Step	Language	Word	Meaning
1	Latin	subnervo	I hamstring; I invalidate or refute
2	Latin	sub	under, beneath; behind; at the feet of
3	Proto-Italic	supo	under
4	Proto-Indo-European	upó	under, below
5	Proto-Indo-European	h₃ewp-	—

Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Proto-Italic supo →