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English definition of “collaborator”

collaborator

noun [C] (ENEMY SUPPORTER)    /kəˈlæb.ə.reɪ.tər/ US  /-t̬ɚ/ disapproving
a person who works with an enemy who has taken control of their country : wartime collaborators a Nazi collaboratorDisloyalty, betrayal and treason
(Definition of collaborator noun (ENEMY SUPPORTER) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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