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

  • n. The condition of being mendacious; untruthfulness.
  • n. A lie; a falsehood.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The fact or condition of being untruthful; dishonesty.
  • n. A lie, deceit or falsehood.

from the GNU version of the Collaborative International Dictionary of English

  • n. The quality or state of being mendacious; a habit of lying.
  • n. A falsehood; a lie.

from The Century Dictionary and Cyclopedia

  • n. The quality of being mendacious; a disposition to lie or deceive; habitual lying.
  • n. A falsehood; a lie.

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

  • n. the tendency to be untruthful


From post-classical Latin mendacitas, from Latin mendāx ("lying"). (Wiktionary)



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  • "He spoke in the hoarse, cadenced tones of a lifelong teller of tales--one of those devine fools born to merge memory and mendacity into dreams as airily gorgeous as cobwebs strung with drops of dew." From Stephen King's The Wastelands

    January 1, 2011

  • great word from Cat on a Hot Tin Roof

    March 30, 2007