Where does “rivage” come from?

rivage (Middle French) comes from Old French rive, from Latin rīpa, from Proto-Italic reipā, from Proto-Indo-European h₁réyp-eh₂.

Ancestry of “rivage”, step by step

Step	Language	Word	Meaning
1	Old French	rive	rim, edge
2	Latin	rīpa	—
3	Proto-Italic	reipā	—
4	Proto-Indo-European	h₁réyp-eh₂	—

rivage — Etymology, Origin & Word History | Etymology Explorer