Definitions for insidiousɪnˈsɪd i əs

This page provides all possible meanings and translations of the word insidious

Random House Webster's College Dictionary

in•sid•i•ousɪnˈsɪd i əs(adj.)

  1. intended to entrap or beguile:

    an insidious plan.

  2. stealthily treacherous or deceitful:

    an insidious enemy.

  3. operating or proceeding inconspicuously but with grave effect:

    an insidious disease.

Origin of insidious:

1535–45; < L insidiōsus deceitful, der. of insidi(ae) (pl.) an ambush, der. of insidēre to sit in or on


Princeton's WordNet

  1. insidious(adj)

    beguiling but harmful

    "insidious pleasures"

  2. insidious(adj)

    intended to entrap

  3. insidious, pernicious, subtle(adj)

    working or spreading in a hidden and usually injurious way

    "glaucoma is an insidious disease"; "a subtle poison"


  1. insidious(Adjective)

    Producing harm in a stealthy, often gradual, manner.

  2. insidious(Adjective)

    Intending to entrap; alluring but harmful

  3. insidious(Adjective)


  4. Origin: From insidiosus, from insidiae + -osus, from insideo, from in + sedeo.

Webster Dictionary

  1. Insidious(adj)

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

  2. Insidious(adj)

    intended to entrap; characterized by treachery and deceit; as, insidious arts


  1. Insidious

    Insidious is the 5th full-length album by Mephisto Walz. All the tracks on this album were arranged, recorded, mixed, written and produced by Barry Galvin. Christianna provided the vocals and David Glass supplied some of the drums for this album.

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