One subsequently coming round for each amateur? (8)
I believe the answer is:
inexpert
'amateur?' is the definition.
(I know that amateur can be written as inexpert)
'one subsequently coming round for each' is the wordplay.
'one' becomes 'i' (Roman numeral).
'subsequently' becomes 'next' (I've seen this in another clue).
'coming round' indicates putting letters inside.
'for each' becomes 'per' (per person).
'next' enclosing 'per' is 'nexpert'.
'i'+'nexpert'='INEXPERT'
(Other definitions for inexpert that I've seen before include "Incompetent" , "Lacking professional skill" , "Unskilled" , "Offering little professionally" , "not good enough" .)