mendacious

[ men-dey-shuhs ]

adjective

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

   a mendacious person.

   Antonyms: veracious

2. false or untrue:

   a mendacious report.

   Antonyms: veracious

Other Words From

• men·dacious·ly adverb
• men·dacious·ness noun
• unmen·dacious adjective
• unmen·dacious·ly adverb

Word History and Origins

Origin of mendacious¹

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

Example Sentences

He posted on X "That speech of Robert Jenrick's was lazy, mendacious, simplistic tripe."

From BBC

Sorry, MAGA, but if the jackboot fits, wear it: he is an authoritarian, a statist, a racist, an aspiring fascist, a hateful, mendacious, corrupt traitor, a fool, mentally ill, and frankly evil.

From Salon

Occasionally, a war or a school shooting will butt in to steal a few hours of prime TV time, but the cable hosts and pundits always return to the mendacious man from Mar-a-Lago.

From Seattle Times

This is a crabbed and mendacious interpretation of the law.

From Los Angeles Times

While some propaganda is mendacious, the most effective propaganda will interlace carefully selected verifiable facts with emotional appeals.

From Salon