Where does “मित्र” come from?

मित्र (Hindi) comes from Sanskrit मित्र, from Proto-Indo-Aryan mitrás, from Proto-Indo-Iranian mitrás, from Proto-Indo-European mēy- — soft, tender, dear.

मित्र (Hindi): male friend; ally

Definitions

male friend; ally

Ancestry of “मित्र”, step by step

Step	Language	Word	Meaning
1	Sanskrit	मित्र	a friend, companion, associate; the sun;...
2	Proto-Indo-Aryan	mitrás	friend
3	Proto-Indo-Iranian	mitrás	covenant; treaty; agreement
4	Proto-Indo-European	mēy-	soft, tender, dear

Words derived from “मित्र”

शिक्षामित्र
मित्रराष्ट्र
मित्र तारा
मित्राई

Every word from Proto-Indo-European mēy- →Every word from Proto-Indo-Iranian mitrás →Every word from Proto-Indo-Aryan mitrás →