Crossword Genius

Trained person if also rubbish (12)

Ross

I believe the answer is:

professional

'trained' is the definition.
(trained for a profession)

'person if also rubbish' is the wordplay.
'rubbish' indicates anagramming the letters (a poor quality or rubbish spelling of the letters).
'person'+'if'+'also'='personifalso'
'personifalso' is an anagram of 'PROFESSIONAL'.

(Other definitions for professional that I've seen before include "Expert - one paid in sport etc" , "Paid sportsman" , "someone performing for a fee maybe" , "Not amateur" , "Skilful, competent" .)

I've seen this clue in The Telegraph.
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