Etymology (diwani)

From Arabic دِيوَان (dīwān), from Persian دیوان (dēvān).

Noun

diwani (ma class, plural madiwani)

1) advisor, councillor

From Wiktionary:

https://en.wiktionary.org/wiki/diwani

https://en.wiktionary.org/wiki/%D8%AF%D9%8A%D9%88%D8%A7%D9%86#Arabic

https://en.wiktionary.org/wiki/%D8%AF%DB%8C%D9%88%D8%A7%D9%86#Persian