Criminal said to be poor (6)

I believe the answer is:

sinner

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'criminal' is the definition.
(someone who has done bad deeds)

I don't understand how the remainder of the clue works.

(Other definitions for sinner that I've seen before include "One breaking divine law" , "person being wicked" , "One who breaches the moral law" , "Serious offender" , "Transgressor of the moral law" .)

I've seen this clue in the Evening Standard.

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