Gangster (7)

I think it could be either:

mobster

hoodlum

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

This is all the clue.

(Other definitions for hoodlum that I've seen before include "Tearaway" , "Yobbo" , "Young thug or criminal" , "tough!" , "Small-time criminal" .)

I've seen this clue in The Telegraph, The Times, The Guardian and The Sunday Times.

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