English dictionary
insidious
/I/n's/I/d/i//@/s/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
adjective
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Lying in wait; watching an opportunity to insnare or entrap; deceitful; sly; treacherous; -- said of persons; as, the <i>insidious</i> foe.
Source: webster1913
adjective satellite
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beguiling but harmful
ExamplesInsidious pleasures.
Source: WordNet 3.0
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intended to entrap
Source: WordNet 3.0
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working or spreading in a hidden and usually injurious way
ExamplesGlaucoma is an insidious disease.
Source: WordNet 3.0