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English definition of “collaborate”

collaborate

verb [I] (SUPPORT AN ENEMY)    /kəˈlæb.ə.reɪt/ disapproving
to work with an enemy who has taken control of your own country: Anyone who was suspected of collaborating with the occupying forces was arrested.Disloyalty, betrayal and treason
(Definition of collaborate verb (SUPPORT AN ENEMY) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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