"perfidiousness" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "perfidious",
        "3": "ness"
      },
      "expansion": "perfidious + -ness",
      "name": "suffix"
    }
  ],
  "etymology_text": "perfidious + -ness",
  "forms": [
    {
      "form": "perfidiousnesses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "+"
      },
      "expansion": "perfidiousness (usually uncountable, plural perfidiousnesses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -ness",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1781, Samuel Johnson, “Addison”, in Lives of the Poets",
          "text": "Not only Cato is vanquished by Caesar, but the treachery and perfidiousness of Syphax prevail over the honest simplicity and the credulity of Juba.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Unfaithfulness; deceitfulness; perfidy."
      ],
      "id": "en-perfidiousness-en-noun-j7kVhQGk",
      "links": [
        [
          "Unfaithfulness",
          "unfaithfulness"
        ],
        [
          "deceitfulness",
          "deceitfulness"
        ],
        [
          "perfidy",
          "perfidy"
        ]
      ],
      "raw_glosses": [
        "(rare) Unfaithfulness; deceitfulness; perfidy."
      ],
      "related": [
        {
          "word": "perfidious"
        },
        {
          "word": "perfidiously"
        }
      ],
      "tags": [
        "rare",
        "uncountable",
        "usually"
      ]
    }
  ],
  "word": "perfidiousness"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "perfidious",
        "3": "ness"
      },
      "expansion": "perfidious + -ness",
      "name": "suffix"
    }
  ],
  "etymology_text": "perfidious + -ness",
  "forms": [
    {
      "form": "perfidiousnesses",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "+"
      },
      "expansion": "perfidiousness (usually uncountable, plural perfidiousnesses)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "perfidious"
    },
    {
      "word": "perfidiously"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -ness",
        "English terms with quotations",
        "English terms with rare senses",
        "English uncountable nouns",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1781, Samuel Johnson, “Addison”, in Lives of the Poets",
          "text": "Not only Cato is vanquished by Caesar, but the treachery and perfidiousness of Syphax prevail over the honest simplicity and the credulity of Juba.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Unfaithfulness; deceitfulness; perfidy."
      ],
      "links": [
        [
          "Unfaithfulness",
          "unfaithfulness"
        ],
        [
          "deceitfulness",
          "deceitfulness"
        ],
        [
          "perfidy",
          "perfidy"
        ]
      ],
      "raw_glosses": [
        "(rare) Unfaithfulness; deceitfulness; perfidy."
      ],
      "tags": [
        "rare",
        "uncountable",
        "usually"
      ]
    }
  ],
  "word": "perfidiousness"
}