Counterargument overused? Sorry (8)

I believe the answer is:

contrite

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'sorry' is the definition.
(synonyms)

'counterargument overused?' is the wordplay.
'counterargument' becomes 'con' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'overused?' becomes 'trite' (I've seen this in another clue).
'con'+'trite'='CONTRITE'

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(Other definitions for contrite that I've seen before include "Suffering remorse" , "Feeling sorrow for sins" , "Repentant and chastened" , "Feeling remorse" , "Repentant, remorseful" .)

I've seen this clue in The Times.

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