as in treacherous
formal
causing harm in a way that is gradual or not easily noticed
Most people with this insidious disease have no idea that they are infected. an insidious enemy
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of insidious
But also implicit in this genre of social media content, some critics and observers say, are more insidious messages — ones that distort our perceptions of masculinity.
—
Harmeet Kaur, CNN Money, 29 Mar. 2025
My desire to stave off the panic had become more insidious.
—Cristina Tudino, Vogue, 21 Mar. 2025
My desire to stave off the panic had become more insidious.
—Cristina Tudino, Vogue, 21 Mar. 2025
If the other AGIs take the bait, the insidious AGI stands tall as the best, assuming nobody finds out the underhanded gambit at play.
—Lance Eliot, Forbes, 21 Mar. 2025
See All Example Sentences for insidious
Harmeet Kaur, CNN Money, 29 Mar. 2025
My desire to stave off the panic had become more insidious.
—Cristina Tudino, Vogue, 21 Mar. 2025
My desire to stave off the panic had become more insidious.
—Cristina Tudino, Vogue, 21 Mar. 2025
If the other AGIs take the bait, the insidious AGI stands tall as the best, assuming nobody finds out the underhanded gambit at play.
—Lance Eliot, Forbes, 21 Mar. 2025
See All Example Sentences for insidious
Recent Examples of Synonyms for insidious
Adjective
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The match ended when Heyman turned on both Punk and Reigns with a pair of treacherous low blows on each.—
Alfred Konuwa,
Forbes.com,
20 Apr. 2025
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In February, Star residents and City Council members clashed over competing needs for a new school and improvements to a treacherous road, with the school proposal winning out.—
Rose Evans,
Idaho Statesman,
16 Apr. 2025
Adjective
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Shannon Riley, founder and CEO of Building 180 – an art production and consulting agency that arranged the installation – told USA TODAY battery and funding reasons limit the subtle chest motions that mimic breathing to an hour a day, from 5-6 p.m.—
Jorge L. Ortiz,
USA Today,
18 Apr. 2025
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Here, the power lies in subtle luxury—heritage made tangible.—
Kate Hardcastle,
Forbes.com,
18 Apr. 2025
Adjective
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But the jitters still shook him, a false-start whistle blowing on his first 40-yard attempt at February’s NFL combine.—
Luca Evans,
Denver Post,
13 Apr. 2025
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Sanchez and her co-conspirators created false documents for the victims, including Permanent Residence cards and Social Security cards, and helped the victims find employment in the Hartford area.—
Stephen Underwood,
Hartford Courant,
12 Apr. 2025
Adjective
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Battering ram with deceptive speed (4.51), but struggles catching the ball.—
Rob Reischel,
Forbes.com,
14 Apr. 2025
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In addition to his first-term tariffs, Trump also filed a formal World Trade Organization case against China, alleging deceptive trade practices and intellectual property theft.—
David Faris,
MSNBC Newsweek,
11 Apr. 2025
Adjective
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Jake Gyllenhaal is his foil as the perfidious Iago, who goads Othello into unreasoning jealousy with lies about his beloved Desdemona (Molly Osborne).—
New York Times,
New York Times,
17 Feb. 2025
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Since then, Putin has sought instead to rally the public to the defense of a motherland besieged by the perfidious and cunning West.—
Leon Aron,
The Atlantic,
5 Dec. 2024
Adjective
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The Times' then-editorial page editor, James Bennet, who had inserted the incorrect claims into the passage, wrote an apology that was posted to the opinion section's social media account.—
David Folkenflik,
NPR,
13 Apr. 2025
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Specifically, the extension payment date for taxpayers who log into the IRS website is incorrect.—
Kelly Phillips Erb,
Forbes.com,
12 Apr. 2025
Adjective
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His interrogator conceded that the police must have gotten the wrong guy and released him within weeks.—
Gisela Salim-Peyer,
The Atlantic,
10 Apr. 2025
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Five justices said the lawsuit was brought in the wrong venue.—
Devin Dwyer,
ABC News,
10 Apr. 2025
Cite this Entry
“Insidious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insidious. Accessed 24 Apr. 2025.
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