Where does “モペッ” come from?

モペッ (Ainu) comes from Japanese モ, from Ainu ペッ, from Japanese ペ.

Ancestry of “モペッ”, step by step

Step	Language	Word	Meaning
1	Japanese	モ	—
2	Ainu	ペッ	water
3	Japanese	ペ	—

Words derived from “モペッ”

Every word from Japanese ペ →Every word from Ainu ペッ →Every word from Japanese モ →