Definition of Insidious
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(a.) Lying in wait; watching an opportunity to insnare or entrap; deceitful; sly; treacherous; -- said of persons; as, the insidious foe.
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(a.) Intended to entrap; characterized by treachery and deceit; as, insidious arts.
Antonyms of Insidious
No Antonyms Found.
Homophones of Insidious
No Homophones Found.