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English definition of “McCarthyism”

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McCarthyism

noun [U] uk   /məˈkɑː.θi.ɪ.zəm/ us    /-ˈkɑːr-/
the practice of accusing someone of being a Communist and therefore avoiding or not trusting them: McCarthyism is named after the American politician Joseph McCarthy, who in the 1950s accused many Americans of being Communists. She was a victim of McCarthyism.
McCarthyite
noun [C], adjective uk   /-aɪt/ ( also McCarthyist ) us  
He led a McCarthyite witch hunt against homosexuals.
(Definition of McCarthyism from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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