Where does “Adatchi” come from?

Adatchi (Chichewa) comes from Chichewa a-, from Proto-Bantu à- — Class 1 subject concord.

Ancestry of “Adatchi”, step by step

Step	Language	Word	Meaning
1	Chichewa	a-	Class 2 noun prefix
2	Proto-Bantu	à-	Class 1 subject concord