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Use "antagonistical" in a sentence
"A volume might be filled with literary judgments by him as antagonistical and inconsistent as the sharpest antitheses."
"It must interpose likewise in the matter of industry, and exclude that antagonistical principle of competition -- the poisoned fount of so much virulence, violence and ruin."
"These two antagonistical principles were at perpetual variance, it being the law of one to counteract whatever the other did."