Crossword Genius

A friend taking in Trim show for The Confirmation (8)

Ross

I believe the answer is:

approval

I'm a little stuck... Click here to teach me more about this clue!

'the confirmation' is the definition.
(thesaurus)

'a friend taking in trim show for' is the wordplay.
I cannot really understand how this works, but
'a' is present in the answer.
'for' could be 'pro' (I've seen this before) and 'pro' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for approval that I've seen before include "Ratification" , "Blessing" , "Leave" , "Acceptance as satisfactory" , "Approbation, favour" .)

I've seen this clue in the Irish Times and the Irish Times (Crosaire).
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