Definitions

Available Definitions:
1)  a. - Lying in wait; watching an opportunity to insnare or entrap; deceitful; sly; treacherous; -- said of persons; as, the insidious foe.
2)  a. - Intended to entrap; characterized by treachery and deceit; as, insidious arts.

 Antonyms of "Insidious"

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