Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Bitter and sharp in language or tone; rancorous: an acrimonious debate between the two candidates.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. angry, acid, and sharp in delivering argumentative replies: bitter; mean-spirited; sharp in language or tone.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Acrid; corrosive.
  • adj. Caustic; bitter-tempered' sarcastic.

from The Century Dictionary and Cyclopedia

  • Abounding in acrimony or acridness; acrid; corrosive.
  • Figuratively, severe; bitter; virulent; caustic; stinging: applied to language, temper, etc.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. marked by strong resentment or cynicism

Etymologies

acrimony +‎ -ous. From French acrimonieux, from Latin acrimoniosus. (Wiktionary)

Examples

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