Impatient author’s preceded by everyone else (7)

I believe the answer is:

restive

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'impatient' is the definition.
(I've seen this in another clue)

I don't understand how the remainder of the clue works.

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(Other definitions for restive that I've seen before include "Unable to stay still" , "It veers around, resisting control" , "Resisting control, nervous or impatient" , "Uneasy, nervous" , "Unable to keep still" .)

I've seen this clue in The Times.

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