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English definition of “traitor”

traitor

noun [C] uk   /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
adjective uk   /-əs/ formal disapproving us  
(Definition of traitor from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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