[f. L. acerbāt- ppl. stem of acerbā-re to embitter; f. acerb-us bitter, harsh.] To sour or embitter; usually fig. to exasperate.

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[1731.  In Bailey, vol. II.

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1818.  In Todd n.q.]

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1845.  Lytton, Zanoni, Ep. Ded. The ignoble jealousy and the sordid strife which degrade and acerbate the ambition of Genius.

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1862.  A. Trollope, North Amer., I. 86. The Canadians … have been vexed and acerbated by the braggadocio of the Northern States.

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