MENDACIOUSNESS Synonyms: 50 Similar and Opposite Words

mendaciousness

noun

Definition of mendaciousness

as in deceit

the tendency to tell lies her memoirs have such an air of pervasive mendaciousness that she seems to have lost all sense of what truth is

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

Recent Examples of Synonyms for mendaciousness

Noun

When Gianni Infantino was chosen to replace Sepp Blatter as president of FIFA, he was seen as a reformer, someone who would bring transparency and openness to soccer’s international governing body, which had long been mired in scandal and deceit.

— Kevin Baxter, Los Angeles Times, 4 Aug. 2026
In my view, to tell the story of America’s founding without referencing these profound scars is akin to deceit, if not complicity.

— Jacob Ware, The Conversation, 31 July 2026

Definition of deceit

Noun

Antisocial personality includes a persistent pattern of traits such as callousness, lack of concern, deceitfulness, and irresponsibility, Ryan said.

— Harriet Ramos, Fort Worth Star-Telegram, 29 Apr. 2026
Perfidy — from the French perfidie via the Latin perfidia — means deceitfulness, treachery or a breach of faith or promise.

— Harmeet Kaur, CNN Money, 21 Jan. 2026

Definition of deceitfulness

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Browse Nearby Words

mendaciously

mendaciousness

mendacities

See all Nearby Words

Cite this Entry

Style

“Mendaciousness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/mendaciousness. Accessed 17 Aug. 2026.

Copy Citation

Synonyms of mendaciousness

noun

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

lackadaisical

Popular in Grammar & Usage

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

7 Pairs of Commonly Confused Words

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Do you 'say your piece' or 'say your peace'?

Why is '-ed' sometimes pronounced at the end of a word?

Popular in Wordplay

Words from the 'Odyssey'

The Longest Long Words List

It's a Scorcher! Words for the Summer Heat

Is “GIF” Pronounced “Jiff” or “Giff”?

12 Lovely and Unusual Words for the Natural World

Popular

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Words from the 'Odyssey'

The Longest Long Words List

Games & Quizzes