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insidious

[in-sid-ee-uhs] / ɪnˈsɪd i əs /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

That’s why the Rededicate 250 event is so insidious — even if the speakers behave themselves and don’t say anything too controversial on stage.

From Salon • May 15, 2026

"They are insidious; they will do what they want, and it will not save us, in any case," added the 71-year-old, who was displaced by fighting in eastern Ukraine.

From Barron's • Apr. 30, 2026

That we don’t admit our most insidious urges only makes them stronger.

From The Wall Street Journal • Apr. 8, 2026

It’s a subtle shift where “treat yourself” moments — like frequent dinners out or luxury upgrades — slowly morph into consistent, insidious monthly expenses.

From MarketWatch • Apr. 7, 2026

I imagined the tumor metastasizing into my own bones, boring holes into my skeleton, a slithering eel of insidious intent.

From "The Fault in Our Stars" by John Green




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