Grant's making excuses? (10)

I believe the answer is:

allowances

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'excuses?' is the definition.
(I've seen this before)

'grant's making' is the wordplay.
'grant' becomes 'allowance' (allowancing is a kind of granting).
'making' becomes 's' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'allowance'+'s'='ALLOWANCES'

Can you help me to learn more?

(Other definitions for allowances that I've seen before include "excuses" , "rations" .)

I've seen this clue in The Everyman puzzle in The Observer.

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