insidious

/ɪnˈsɪdi.əs/

adj 3

Collocations

ADJ.

animal, dangerous, growing, rare, secret, slow, systematic, widespread

VERB + INSIDIOUS

isn't, leak, say

INSIDIOUS + NOUN

assumption, cancer, contagion, disease, idea, infiltration, methods

PREP.

in, up, with

Definitions

adj

Causing harm in a stealthy, often gradual, manner.

Strong and vigorous man as he looks, Livingstone has been for years the victim of a secret and insidious disease.

At some point in time they may become the source of an insidious cancer.

Intending to entrap; alluring but harmful.

Hansel and Gretel were lured by the witch’s insidious gingerbread house.

Gashford slid his cold insidious palm into his master's grasp, and so, hand in hand, and followed still by Barnaby and by his mother too, they mingled with the concourse.

Treacherous.

The battle was lost due to the actions of insidious defectors.

But with whom do you contract that alliance? With the natural enemy of France — that insidious house of Austria — which detests our country from feeling, system, and necessity.

Thesaurus

Synonyms

adjective — working or spreading in a hidden and usually injurious way

Antonyms

Idioms & Phrases

Example Bank

Strong and vigorous man as he looks, Livingstone has been for years the victim of a secret and insidious disease.

Wiktionary

At some point in time they may become the source of an insidious cancer.

Wiktionary

The nurse always must be alert to signs of slow leak or insidious infiltration.

Wiktionary

In junior high and high schools, they say insidious forms of bullying are on the rise.

Tatoeba · #277473

We are working against an enemy who is very insidious in his methods.

Tatoeba · #2654487

That's a very insidious disease. You don't notice it until it's too late.

Tatoeba · #2874243

Usage Notes

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