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insidious

/ˌɪnˈsɪˌdiəs/ · 9 letters · 6 distinct letters

  1. adjective

    beguiling but harmful

    insidious pleasures

  2. adjective

    intended to entrap

  3. adjective

    working or spreading in a hidden and usually injurious way

    glaucoma is an insidious disease

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insidious: definition, pronunciation and puzzle history · Nectary