Crossword Genius

Nothing, presumably, from Matthew on Grant (5)

Ross

I believe the answer is:

allot

'grant' is the definition.
(synonyms)

I don't understand the rest of the clue.

(Other definitions for allot that I've seen before include "Give as a share, or a task to be done" , "Assign (to someone)" , "Hand out" , "Apportion, share" , "grant" .)

I've seen this clue in The Times.
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