Thesaurus

mendacious

adjective

Synonyms & Antonyms of mendacious

telling or containing lies
  • that tabloid routinely publishes the most moronically mendacious stories about celebrities

Synonyms for mendacious

Words Related to mendacious

Near Antonyms for mendacious

Antonyms for mendacious

See the Dictionary Definition 

Frequently Asked Questions About mendacious

How does the adjective mendacious differ from other similar words?

Some common synonyms of mendacious are deceitful, dishonest, and untruthful. While all these words mean "unworthy of trust or belief," mendacious may suggest bland or even harmlessly mischievous deceit and when used of people often suggests a habit of telling untruths.

mendacious tales of adventure

When is deceitful a more appropriate choice than mendacious?

The words deceitful and mendacious are synonyms, but do differ in nuance. Specifically, deceitful usually implies an intent to mislead and commonly suggests a false appearance or double-dealing.

the secret affairs of a deceitful spouse

When might dishonest be a better fit than mendacious?

In some situations, the words dishonest and mendacious are roughly equivalent. However, dishonest implies a willful perversion of truth in order to deceive, cheat, or defraud.

a swindle usually involves two dishonest people

In what contexts can untruthful take the place of mendacious?

The meanings of untruthful and mendacious largely overlap; however, untruthful stresses a discrepancy between what is said and fact or reality.

an untruthful account of their actions

Keep scrolling for more

Learn More about mendacious

Time Traveler for mendacious

Time Traveler

The first known use of mendacious was in 1616

See more words from the same year

Listen to Our Podcast about mendacious

Cite this Entry

“Mendacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/mendacious. Accessed 1 Oct. 2020.

More from Merriam-Webster on mendacious

Dictionary: Definition of mendacious

Nglish: Translation of mendacious for Spanish Speakers

Comments on mendacious

What made you want to look up mendacious? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!