Anxiety, apprehension (6)

I believe the answer is:

nerves

(Other definitions for nerves that I've seen before include "Bodily fibres that convey sensations" , "Bodily fibres carrying impulses of sensation" , "causing some anxiety" , "Fibres that convey messages to the brain" , "Bodily fibres conveying sensations" .)

I've seen this clue in The Times.

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