Crossword Genius

Not amateur (12)

Ross

I think it could be either:

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3

12

professional

'not amateur' is the definition.
('professional' is the opposite to 'amateur')

This is all the clue.

(Other definitions for professional that I've seen before include "Paid sportsman" , "someone performing for a fee maybe" , "Deliberate infringement to prevent the other side scoring" , "Qualified" , "Expert - one paid in sport etc" .)

I've seen this clue in The Independent.
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