[ men-dey-shuhs ]
See synonyms for: mendaciousmendaciously on

  1. telling lies, especially habitually; dishonest; lying; untruthful: a mendacious person.

  2. false or untrue: a mendacious report.

Origin of mendacious

1610–20; <Latin mendāci- (see mendacity) + -ous

Opposites for mendacious

Other words from mendacious

  • men·da·cious·ly, adverb
  • men·da·cious·ness, noun
  • un·men·da·cious, adjective
  • un·men·da·cious·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use mendacious in a sentence