Carp arrive undone and unseasoned (8)

I believe the answer is:

complain

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'carp' is the definition.
(thesaurus)

I don't understand the remainder of the clue.

(Other definitions for complain that I've seen before include "Express a grievance" , "Grumble, carp" , "Express a sense of injury or say you're ill" , "Beef (or grouse?)" , "Express dissatisfaction" .)

I've seen this clue in the Sydney Morning Herald.

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