ꠜꠣꠟꠣ (Sylheti) comes from Sanskrit भल्ल, from Sanskrit *भद्ल, from Sanskrit भद्र, from Proto-Indo-Iranian bʰadrás, from Proto-Indo-European bʰn̥d-ró-s, from Proto-Indo-European bʰend- — to be happy.
ꠜꠣꠟꠣ (Sylheti): good