Resentment in club: first couple missing for days! (7)

I believe the answer is:

dudgeon

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'resentment' is the definition.
(I've seen this before)

I don't understand the remainder of the clue.

(Other definitions for dudgeon that I've seen before include "Deep resentment" , "Angry feeling" , "Offended indignation" , "feeling of resentment" , "indignant state" .)

I've seen this clue in The Times.

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