An addict may be fined (5)

I believe the answer is:

fiend

'an addict' is the definition.
(fiend can mean someone addicted to something)

'may be fined' is the wordplay.
'may be' is an anagram indicator.
'fined' with letters rearranged gives 'FIEND'.

(Other definitions for fiend that I've seen before include "Wicked and inhuman person" , "Devilish person" , "Demon; cruel person" , "Evil spirit, demon" , "Devil" .)

I've seen this clue in The Globe and Mail.

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