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English definition of “ostracize”

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verb [T]  /ˈɑs·trəˌsɑɪz/ us  
to prevent someone from being part of a group because you dislike the person or disapprove of something the person has done: She was ostracized by fellow officers after bringing charges against her partner.
noun [U]  /ˈɑs·trəˌsɪz·əm/ us  
Those who refused to conform risked ostracism.
(Definition of ostracize from the Cambridge Academic Content Dictionary © Cambridge University Press)
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