Rebellious pervert receives fine for verse (7)

I believe the answer is:

defiant

'rebellious' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

(Other definitions for defiant that I've seen before include "Disobedient" , "Unyielding" , "Mutinous" , "obstreperous" , "Insolently bold" .)

I've seen this clue in The Independent.

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