Definition of mendacious in English:



  • Not telling the truth; lying.

    ‘mendacious propaganda’
    • ‘Overall, Wittenberg portrays him as a petty, hypocritical, mendacious man whose primary focus was self-promotion.’
    • ‘If the emphasis does not change, moving away from the meaningless and mendacious form-filling of the current regime, the wool will continue to be pulled over the eyes of the public and the regulator.’
    • ‘He's mendacious and obnoxious, so what accounts for his appeal?’
    • ‘But it's no more mendacious than a bunch of other tendentious uses of statistics that are the common coin of political debate today.’
    • ‘The film is more than unusual in its attempt to connect society's dysfunction and popular misery with the actions of a hypocritical, mendacious ruling elite.’
    • ‘And despite the fact that I've been almost exclusively mendacious since my late teens, it's not rained on me once.’
    • ‘Though one imagines that successful players must be mean, damaged and mendacious, he turned out to be a thoroughly charming and friendly bear of a man.’
    • ‘Here it is… equally malodorous, mendacious, but it's up there on the Web for all to see, truth is stranger than fiction.’
    • ‘Instead, the justifications offered for the restrictions contained in the amendment to the act have been either disingenuous or simply mendacious.’
    • ‘The common treatment of the monopoly question is thoroughly mendacious and dishonest.’
    • ‘By the end - though of course they are much too polite to say so - I can see they are thinking that I must be either completely senile or completely mendacious.’
    • ‘It makes me think we are dealing with a vain mendacious man who clung to power as long as he possibly could wrapped in a cloud of vainglory and falsehood, when he should have had the good grace to go quietly long ago.’
    • ‘It is because the argument has been had and they have comprehensively lost it - because every one of their arguments is either bogus, mendacious or plain demonstrably wrong.’
    • ‘Still, the nagging sense (given the mendacious way the plan/nonplan is being sold) is that people will be compelled to choose to be risk takers.’
    • ‘It is quite possible that his only truly shameful act was his abandonment of his daughter and her mother, not to mention his mendacious behaviour toward my mother.’
    • ‘He wanted me to know the sort of country I was living in and what was going on around me, in defiance of the chronically mendacious official propaganda.’
    • ‘It is an outright lie, a fabrication by a mendacious and unscrupulous writer.’
    • ‘He has lied about his school and college results and his credit cards have more bounce than Beyoncé, so this mendacious chap needs to mend his ways.’
    • ‘Another strand recounts the author's debilitating experiences with the music industry in all its mendacious vainglory.’
    • ‘That promise has been revealed as mendacious nonsense.’
    lying, untruthful, dishonest, deceitful, false, dissembling, insincere, disingenuous, hypocritical, fraudulent, double-dealing, two-faced, janus-faced, two-timing, duplicitous, perjured, perfidious
    untrue, fictitious, falsified, fabricated, fallacious, invented, made up, hollow
    economical with the truth, terminologically inexact
    View synonyms


Early 17th century: from Latin mendax, mendac- lying (related to mendum fault) + -ious.