Dealt with cheese, irritated (6)

I believe the answer is:

grated

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'irritated' is the definition.
(grating is a kind of irritating)

I can't explain the remainder of the clue.

(Other definitions for grated that I've seen before include "was jarring" , "Rasped, perhaps on nerves" , "Rubbed harshly as on nerves" , "Shredded (eg, carrots)" , "Nutmeg and cheese often are" .)

I've seen this clue in The Daily Express.

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