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English definition of “traitor”

traitor

noun [C]     /ˈtreɪ.tər/ US  /-t̬ɚ/ disapproving
a person who is not loyal or stops being loyal to their own country, social class, beliefs, etc.: The leaders of the rebellion were hanged as traitors. The Chinese Communist Party branded (= called) Mr Gorbachev 'a traitor to socialism'.Disloyalty, betrayal and treason traitorous     /-əs/ adjective formal disapproving
(Definition of traitor noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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