Where does “उस्ताद” come from?
उस्ताद (Hindi) comes from Classical Persian استاد, from Middle Persian ʾwstʾt', from Proto-Iranian Hawastātas, from Proto-Iranian HawastaHyáti, from Proto-Iranian Hawa-.
उस्ताद (Hindi): teacher; master, expert
Ancestry of “उस्ताद”, step by step