insidiousness definition

  • noun:
    • A surreptitious harmfulness, quality of entrapment, or treacherousness; the characteristic of being insidious.
    • A subtle and cumulative harmfulness, especially of a disease.
    • the grade of being built to entrap.
    • the standard of being insidious; deceitfulness; treachery.
    • slight and cumulative harmfulness (especially of an illness)
    • the caliber of becoming made to entrap

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