пушти (Tajik) comes from Tajik пушт, from Persian پشت, from Proto-Iranian *pr̥štáh, from Proto-Indo-Iranian pr̥štʰás, from Proto-Indo-European pr̥-sth₂-ós, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.
пушти (Tajik): behind