Definitions

insidious

[in-sid-ee-uhs] / ɪnˈsɪd i əs /

ADJECTIVE

sneaky, tricky

Synonyms

STRONGEST

dangerous subtle

WEAK

Machiavellian artful astute corrupt crafty crooked cunning deceitful deceptive deep designing dishonest disingenuous duplicitous ensnaring false foxy guileful intriguing like a snake in the grass perfidious perilous secret slick sly smooth snaky sneaking stealthy surreptitious treacherous wily wormlike

Antonyms

WEAK

fair honest open sincere

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.

According to IMDb, his final projects were the 2023 video game “Ghostrunner II” and the upcoming video game “Phantasmat: Insidious Dreams.”

From Los Angeles Times • Mar. 3, 2024

Last week’s top film, “ Insidious: The Red Door ” slid to third with $13 million in its second weekend.

From Seattle Times • Jul. 16, 2023

I have to ask you one more thing, because I'm a big "Insidious" fan.

From Salon • Jun. 23, 2023

This summer has been full of climate disasters: Insidious wildfires, overwhelming heat waves and extreme flooding events have been rampant.

From Washington Post • Sep. 13, 2022

Insidious concepts 376:6 Just so is it with the greatest sin.

From Science and Health, with Key to the Scriptures by Eddy, Mary Baker

Vocabulary lists containing insidious

Grade 9, List 1

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300 Most Difficult "SAT" Words

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Fahrenheit 451

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