Bent on a career in crime? (7)

I believe the answer is:

crooked

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'bent' is the definition.
(crooking is a kind of bending)

I don't understand the rest of the clue.

(Other definitions for crooked that I've seen before include "Not straight or aligned" , "Criminal" , "Awry - untrustworthy" , "Bent, twisted" , "Misshapen" .)

I've seen this clue in the Evening Standard.

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