insidious definition

  • adjective:
    • performing or spreading harmfully in a subtle or stealthy fashion: insidious rumors; an insidious disease.
    • meant to entrap; treacherous: insidious misinformation.
    • Beguiling but harmful; alluring: insidious pleasures.
    • yielding damage in a stealthy, often progressive, manner.
    • going to entrap; alluring but harmful.
    • Treacherous.
    • Lying in wait; seeing a way to insnare or entrap; deceitful; sly; treacherous; -- said of individuals.
    • designed to entrap; characterized by treachery and deceit.
    • Acting or proceeding unobserved or in a seemingly benign way, but slowly or in the course of time doing great damage.
    • beguiling but harmful
    • designed to entrap
    • working or distributing in a hidden and usually injurious means
  • others:
    • lying-in wait; hence, deceitful; sly; treacherous.
    • Designed or adapted to entrap; deceptive; insnaring: since, insidious arts.

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