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

And for the third such election in a row, I will have to vote for “none of the above” since I can’t bring myself to vote for either the senile, mendacious current president, or the narcissistic, election-denying previous president.

From Seattle Times

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