adjective
showing or feeling active opposition or hostility towards someone or something
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The two political parties had an antagonistic relationship, constantly opposing each other's policies.
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My brother and I have always had an antagonistic dynamic, always bickering and disagreeing.
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The players on the rival teams were being so antagonistic towards each other, trash-talking and trying to intimidate.
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The storm clouds gathered in an antagonistic manner, threatening to unleash their fury at any moment.