insidiousness

noun

as in underhandedness

Related Words

Relevance

Dissimilar Words

Example Sentences

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.
Recent Examples of insidiousness Thankfully, Leviticus has a good grasp on how to leverage this conceit for scares and to score points about the insidiousness of mistaking hatred for salvation. — David Fear, Rolling Stone, 17 June 2026 Without ever using the words, this House of the Dragon season evokes all-too-real fears about police funding, abridgment of freedom of speech and the insidiousness of theocratic rule. — Daniel Fienberg, HollywoodReporter, 15 June 2026
Recent Examples of Synonyms for insidiousness
  1. hypocrisy
  2. slyness
  3. perfidy
  4. duplicity
  5. trickery
  6. deception
  7. slipperiness
  8. smoothness
Noun
  • The article highlights the hypocrisy of promoting regenerative farming while allowing glyphosate, a probable carcinogen, which undermines soil health and human well-being.
    — Andrew Watman, Forbes.com, 21 July 2026
  • As the saying goes, hypocrisy is the tribute that vice pays to virtue.
    — Quinta Jurecic, The Atlantic, 16 July 2026
Definition of hypocrisy
Noun
  • The harp is not an instrument of slyness, wryness, or the earth.
    — Emma Madden, Pitchfork, 28 Apr. 2026
  • Like the tricksters of myth, there’s depth to their slyness.
    — Big Think, Big Think, 5 Feb. 2026
Definition of slyness
Noun
  • Platner, indeed, has boiled down nearly all political problems to the perfidy of sinister oligarchs.
    — Jonathan Chait, The Atlantic, 6 July 2026
  • If the landing had been faked, the Soviets would have figured it out and would have loved to reveal to the world America’s perfidy.
    — Encyclopedia Britannica, Encyclopedia Britannica, 14 May 2026
Definition of perfidy
Noun
  • The detective-heroines (and especially the actress-detectives) in this canon are careful about how performance might be extended to social duplicity, dishonesty, and fraud—but the lady criminals of Victorian detective fiction cross this line easily.
    — Literary Hub, Literary Hub, 24 July 2026
  • But honesty doesn’t always save a career, and duplicity doesn’t always sink one.
    — Tracy Grant, Encyclopedia Britannica, 26 June 2026
Definition of duplicity
Noun
  • Marc Cucurella and Pedro Porro have stretched defenses from the flanks, while Lamine Yamal has confused them with his trickery.
    — Jibin Joseph, PC Magazine, 18 July 2026
  • Still, if any one of them did start — plus rotational options of Desire Doue or Cherki — then England’s defence will need to stay on high alert for runs in behind and trickery in wide areas.
    — Mark Carey, New York Times, 16 July 2026
Definition of trickery
Noun
  • Yes, a bit of deception has long been standard in listing photos — a wide lens, a bit of color saturation to make a viewless window appear brighter — but the tools today are more sophisticated, cheaper, and pretty ubiquitous.
    — Matthew Sedacca, Curbed, 21 July 2026
  • Nolan reinvents him as a naive young soldier left outside the horse to sell Odysseus’ deception.
    — Los Angeles Times, Los Angeles Times, 21 July 2026
Definition of deception
Noun
  • Cerúndolo went out in the first round at Wimbledon, and analyst Gill Gross suggested that the slipperiness of the grass may have been a factor.
    — Charlie Eccleshare, New York Times, 3 July 2026
  • In the following chapters of Quand j’étais photographe, Nadar plays on the rhetorical and material slipperiness of invention to craft a curious portrait of photography’s first fifty-odd years.
    — Literary Hub, Literary Hub, 27 Apr. 2026
Definition of slipperiness
Noun
  • Golden has first-round NFL draft capital, with terrific speed and the smoothness to match.
    — Jake Ciely, New York Times, 22 July 2026
  • The energy of the room, the confidence of the presenter, the smoothness of the narrative, all of it affects judgment before analysis begins.
    — Amer Al Ahbabi, Forbes.com, 20 July 2026
Definition of smoothness

Browse Nearby Words

insidiously
insidiousness
insight
See all Nearby Words

Cite this Entry

“Insidiousness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insidiousness. Accessed 25 Jul. 2026.

Copy Citation

More from Merriam-Webster on insidiousness

Nglish: Translation of insidiousness for Spanish Speakers

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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

Popular in Grammar & Usage

See More

Democracy or Republic: What's the difference?

Merriam-Webster’s Great Big List of Words You Love to Hate

'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?
See More

Popular in Wordplay

See More

It's a Scorcher! Words for the Summer Heat

The Longest Long Words List

Ten Words Ending with a Silent ‘T’

The Words of the Week - Jul 24

Why do we say 'fly off the handle'?
See More

Popular

See More

Democracy or Republic: What's the difference?

It's a Scorcher! Words for the Summer Heat

The Longest Long Words List
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
chain-question-mark
Missing Link Quiz July 2026 Five seconds to figure out the word that fits bot...
See All