from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To increase the severity, violence, or bitterness of; aggravate: a speech that exacerbated racial tensions; a heavy rainfall that exacerbated the flood problems.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To make worse (pain, anger, etc.) worse; aggravate.
- v. To irritate.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To render more violent or bitter; to irritate; to exasperate; to imbitter, as passions or disease.
from The Century Dictionary and Cyclopedia
- To increase the bitterness or virulence of; make more violent, as a disease, or angry, hostile, or malignant feelings; aggravate; exasperate.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. make worse
- v. exasperate or irritate
Latin exacerbāre, exacerbāt- : ex-, intensive pref.; see ex- + acerbāre, to make harsh (from acerbus, harsh; see ak- in Indo-European roots).(American Heritage® Dictionary of the English Language, Fourth Edition)