Generate depraved adolescent (8)

I believe the answer is:

teenager

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'adolescent' is the definition.
(I know that adolescent can be written as teenager)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for teenager that I've seen before include "Old child or young adult?" , "Adolescent" , "Generate (anag)" , "troublesome youth" , "one no longer twelve?" .)

I've seen this clue in The Sun.

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