[f. L. acerbāt- ppl. stem of acerbā-re to embitter; f. acerb-us bitter, harsh.] To sour or embitter; usually fig. to exasperate.
[1731. In Bailey, vol. II.
1818. In Todd n.q.]
1845. Lytton, Zanoni, Ep. Ded. The ignoble jealousy and the sordid strife which degrade and acerbate the ambition of Genius.
1862. A. Trollope, North Amer., I. 86. The Canadians have been vexed and acerbated by the braggadocio of the Northern States.