Where does “Kikongo” come from?

Kikongo (English) comes from Kongo ki-, from Proto-Bantu kɪ̀- — Class 7 noun prefix.

Ancestry of “Kikongo”, step by step

Step	Language	Word	Meaning
1	Kongo	ki-	—
2	Proto-Bantu	kɪ̀-	Class 7 noun prefix

Kikongo — Etymology, Origin & Word History | Etymology Explorer