Given a grilling, is fed up

I think it could be either:

Which length description are you looking for?:

7,3

10*

browned off

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'is fed up' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for browned off that I've seen before include "Cross" , "Annoyed" .)

I've seen this clue in the Evening Standard.

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