Definitions

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

  • adj. Given to biting; biting.
  • adj. Caustic; sarcastic.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Biting, causing a physical bite or sting; corrosive
  • adj. sharp or caustic in style or tone.
  • adj. Prone to biting, aggressive (of an animal etc.).
  • adj. Sharp in intent, sarcastic

from the GNU version of the Collaborative International Dictionary of English

  • adj. Biting; given to biting; hence, figuratively, sarcastic; severe; scathing.

from The Century Dictionary and Cyclopedia

  • Biting; given to biting.
  • Acrid; violent in action.
  • Sarcastic.

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

  • adj. capable of wounding
  • adj. biting or given to biting

Etymologies

Latin mordāx, mordāc- (from mordēre, to bite; see mer- in Indo-European roots) + -ious.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin mordax ("given to biting, corrosive") (from mordere ("to bite, sting")) + -ious. (Wiktionary)

Examples

  • "You must forgive the Maestra for her characteristic mordacious tone, Consejal Pejeno," Betina du Zabala of the Gremio Poetica said, smiling oddly at her great rival.

    notes from the peanut gallery

  • But with one great and splendid virtue was he endowed in the eyes of the enemies of the House of Borgia -- contemporary, and subsequent down to our times -- a most profound, unchristian, and mordacious hatred of all

    The Life of Cesare Borgia

  • Calvinist, vented in his writings a mordacious hatred of the Papacy and of the religion from which he had seceded.

    The Life of Cesare Borgia

  • Hard, mordacious, no man's friend ... that was the

    Wolf Breed

  • But with one great and splendid virtue was he endowed in the eyes of the enemies of the House of Borgia -- contemporary, and subsequent down to our times -- a most profound, unchristian, and mordacious hatred of all Borgias.

    The Life of Cesare Borgia

  • This Tommaso Tommasi, whose real name was Gregorio Leti -- and it is under this that such works of his as are reprinted are published nowadays -- was a most prolific author of the seventeenth century, who, having turned Calvinist, vented in his writings a mordacious hatred of the Papacy and of the religion from which he had seceded.

    The Life of Cesare Borgia

  • Unable longer to endure the lash of his mordacious wit, Shaynon turned and left them alone on the balcony.

    The Day of Days An Extravaganza

  • his name is elijah sandalphon. i'm mordacious schadenfreude. we are going to wrestle. cage match.

    mordicai: crown me king!

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