What does the cryptic crossword clue "Covertly insult another polygamist (6)" mean?

The definition is "polygamist". The wordplay uses a hidden word. SULTAN ( hidden word in [covertly] IN SULT AN OTHER The answer is SULTAN.

Covertly insult another polygamist (6)

Independent Cryptic #11652 | 15 Across | 2024-02-14 flower