Crossword Genius

Covertly insult another polygamist (6)

Ross

I believe the answer is:

sultan

I'm a little stuck... Click here to teach me more about this clue!

'polygamist' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'covertly insult another' is the wordplay.
'SULTAN' is hidden within the letters.
But, I'm uncertain how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for sultan that I've seen before include "Muslim ruler" , "one ruling the roost?" , "Chicken" , "Ottoman sovereign" , "One governs" .)

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