'Exacerbate' definitions:

Definition of 'exacerbate'

From: WordNet
verb
Make worse; "This drug aggravates the pain" [syn: worsen, aggravate, exacerbate, exasperate] [ant: ameliorate, amend, better, improve, meliorate]
verb
Exasperate or irritate [syn: exacerbate, exasperate, aggravate]

Definition of 'Exacerbate'

From: GCIDE
  • Exacerbate \Ex*ac"er*bate\ ([e^]gz*[a^]s"[~e]r*b[=a]t; 277), v. t. [imp. & p. p. Exacerbated ([e^]gz*[a^]s"[~e]r*b[=a]`t[e^]d); p. pr. & vb. n. Exacerbating ([e^]gz*[a^]s"[~e]r*b[=a]`t[i^]ng).] [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]