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English definition of “antithesis”

antithesis

noun [C]     /ænˈtɪθ.ə.sɪs/ (plural antitheses   /-siːz/   )
the exact opposite: She is slim and shy - the very antithesis of her sister. He is the exact antithesis of what I find attractive in men.Opposites a contrast between two things: Thanks to the collapse of communism the political antithesis between Left and Right is less important.Comparing and contrasting antithetical     /ˌæn.tɪˈθet.ɪ.kəl/ US  /-t̬ɪˈθet̬-/ adjective (also antithetic) formal antithetical viewsOpposing and against
(Definition of antithesis noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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