v. t. [ imp. & p. p. Exacerbated p. pr. & vb. n. Exacerbating ] [ L. exacerbatus, p. p. of exacerbare; ex out (intens.) + acerbare. See Acerbate. ] To render more violent or bitter; to irritate; to exasperate; to imbitter, as passions or disease. Brougham. [ 1913 Webster ]