Where does “repentare” come from?

repentare (Vulgar Latin) comes from Latin repens, from Latin rēpō, from Proto-Italic rēpō, from Proto-Indo-European h₁reh₁p- — to creep.

Ancestry of “repentare”, step by step

Step	Language	Word	Meaning
1	Latin	repens	creeping, crawling; sudden, unexpected; recent,...
2	Latin	rēpō	—
3	Proto-Italic	rēpō	—
4	Proto-Indo-European	h₁reh₁p-	to creep

repentare — Etymology, Origin & Word History | Etymology Explorer