Definition of ostracism
1 : a method of temporary banishment by popular vote without trial or special accusation practiced in ancient Greece <Ostracism of political opponents was a common practice in ancient Athens.>
2 : exclusion by general consent from common privileges or social acceptance <For years she suffered ostracism from the scientific community.> <Ostracism is a common fate for tell-all writers. — R. S. Coburn>
First Known Use of ostracism
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