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Definitions

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.

But there’s something uniquely insidious about how the phone is eager to sop up the bounty of time that retirement has granted me.

From The Wall Street Journal • Apr. 12, 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

Times columnist Patt Morrison, Smoglandia traces the rise, impact, and retreat of the city’s most insidious pollution.

From Los Angeles Times • Mar. 26, 2026

"The cold is a very insidious enemy, it should not be underestimated," she said.

From Barron's • Feb. 16, 2026

She was unable, after prolonged and insidious interrogations, to ascertain the causes of Amaranta’s prostration.

From "One Hundred Years of Solitude" by Gabriel Garcia Marquez




Vocabulary lists containing insidious