Agreeing finally to confirm delight (7)

I believe the answer is:

gratify

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'delight' is the definition.
(I know that delight is a more specific form of gratify)

'agreeing finally to confirm' is the wordplay.
'agreeing finally' becomes 'g' (I am not sure about this - if you are sure you should believe this answer much more).
'to confirm' becomes 'ratify' (I've seen this in another clue).
'g'+'ratify'='GRATIFY'

Can you help me to learn more?

(Other definitions for gratify that I've seen before include "Give pleasure to" , "Please - indulge" , "Indulge (a desire)" .)

I've seen this clue in The Guardian.

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