Where does “नाई” come from?

नाई (Hindi) comes from Sauraseni Prakrit 𑀡𑀸𑀯𑀺𑀤, from Sanskrit नापित — barber.

नाई (Hindi): barber, hairdresser

Definitions

Step	Language	Word	Meaning
1	Sauraseni Prakrit	𑀡𑀸𑀯𑀺𑀤	—
2	Sanskrit	नापित	barber

नाई — Etymology, Origin & Word History | Etymology Explorer