Crossword Genius

Saturday night film complaint (5)

Ross

I believe the answer is:

fever

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'complaint' is the definition.

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(Other definitions for fever that I've seen before include "Delirium" , "A rise in the temperature of the body" , "Early part of flu" , "General excitement" , "Excitement; ague" .)

I've seen this clue in the Evening Standard.
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