Players complained loudly (4)

I believe the answer is:

side

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'players' is the definition.
(eg a football side)

I can't explain the rest of the clue.

(Other definitions for side that I've seen before include "Edge - aspect - team" , "Position to the right or left of" , "pretentious attitude" , "Pretentious air" , "faction" .)

I've seen this clue in The Times.

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