Definition of insidious

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Definitions of 'insidious'

Wordnet

1. (adj) insidious
beguiling but harmful
"insidious pleasures"

2. (adj) insidious
intended to entrap

3. (adj) insidious, pernicious, subtle
working or spreading in a hidden and usually injurious way
"glaucoma is an insidious disease"; "a subtle poison"

Definitions of 'insidious'

Webster 1913 Dictionary

1. (adj) insidious
lying in wait; watching an opportunity to insnare or entrap; deceitful; sly; treacherous; -- said of persons; as, the insidious foe

2. (adj) insidious
intended to entrap; characterized by treachery and deceit; as, insidious arts

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