Sudden brilliant idea (11)

I think it could be either:

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5-4

inspiration

'sudden brilliant idea' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for inspiration that I've seen before include "Arousal to creativity" , "bright idea?" , "Muse" , "Sudden brilliant idea" , "Breathtaking" .)

I've seen this clue in The Independent.

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