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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.

"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

The intrusive thoughts of OCD, often called Pure-O or Pure OCD, are sometimes so insidious and about taboo subjects that sufferers do not admit to experiencing them.

From BBC • Apr. 29, 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

Nature had come into her own again and, little by little, in her stealthy, insidious way had encroached upon the drive with long tenacious fingers.

From "Rebecca" by Daphne du Maurier




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