"insidiousness" meaning in English

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      "expansion": "insidious + -ness",
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  "etymology_text": "From insidious + -ness.",
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    {
      "form": "insidiousnesses",
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        "plural"
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      "expansion": "insidiousness (usually uncountable, plural insidiousnesses)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "ref": "1900, Edith Wharton, chapter 8, in The Touchstone:",
          "text": "This lent a new insidiousness to his temptation, since her contempt would be a refuge from his own.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A surreptitious harmfulness, quality of entrapment, or treacherousness; the characteristic of being insidious."
      ],
      "id": "en-insidiousness-en-noun-mTF4d3Nw",
      "links": [
        [
          "surreptitious",
          "surreptitious"
        ],
        [
          "harmfulness",
          "harmfulness"
        ],
        [
          "entrapment",
          "entrapment"
        ],
        [
          "treacherousness",
          "treacherousness"
        ],
        [
          "characteristic",
          "characteristic"
        ],
        [
          "insidious",
          "insidious"
        ]
      ],
      "tags": [
        "uncountable",
        "usually"
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      "translations": [
        {
          "code": "bg",
          "lang": "Bulgarian",
          "roman": "kovarstvo",
          "sense": "the characteristic of being insidious",
          "word": "коварство"
        }
      ]
    }
  ],
  "word": "insidiousness"
}

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        "2": "insidious",
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      "expansion": "insidious + -ness",
      "name": "suffix"
    }
  ],
  "etymology_text": "From insidious + -ness.",
  "forms": [
    {
      "form": "insidiousnesses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "insidiousness (usually uncountable, plural insidiousnesses)",
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  "lang_code": "en",
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          "ref": "1900, Edith Wharton, chapter 8, in The Touchstone:",
          "text": "This lent a new insidiousness to his temptation, since her contempt would be a refuge from his own.",
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        }
      ],
      "glosses": [
        "A surreptitious harmfulness, quality of entrapment, or treacherousness; the characteristic of being insidious."
      ],
      "links": [
        [
          "surreptitious",
          "surreptitious"
        ],
        [
          "harmfulness",
          "harmfulness"
        ],
        [
          "entrapment",
          "entrapment"
        ],
        [
          "treacherousness",
          "treacherousness"
        ],
        [
          "characteristic",
          "characteristic"
        ],
        [
          "insidious",
          "insidious"
        ]
      ],
      "tags": [
        "uncountable",
        "usually"
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  ],
  "translations": [
    {
      "code": "bg",
      "lang": "Bulgarian",
      "roman": "kovarstvo",
      "sense": "the characteristic of being insidious",
      "word": "коварство"
    }
  ],
  "word": "insidiousness"
}