Many fleeing country with ill-gotten gains act confidently (7)

I believe the answer is:

swagger

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'act confidently' is the definition.
(to swagger is to walk in an arrogant way)

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(Other definitions for swagger that I've seen before include "Blustering arrogance" , "Lofty proud gait" , "confident gait" , "Arrogant gait" , "Walk self-importantly, strut" .)

I've seen this clue in The Times.

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