"pernicity" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pernicious",
        "3": "ity",
        "alt1": "pernic(ious)"
      },
      "expansion": "pernic(ious) + -ity",
      "name": "suffix"
    },
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "pernicitas"
      },
      "expansion": "Latin pernicitas",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "pernicious"
      },
      "expansion": "pernicious",
      "name": "m"
    }
  ],
  "etymology_text": "pernic(ious) + -ity, from Latin pernicitas. See pernicious.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "pernicity (uncountable)",
      "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 -ity",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "swiftness; celerity"
      ],
      "id": "en-pernicity-en-noun-wUDlhjKV",
      "links": [
        [
          "swiftness",
          "swiftness"
        ],
        [
          "celerity",
          "celerity"
        ]
      ],
      "raw_glosses": [
        "(archaic) swiftness; celerity"
      ],
      "tags": [
        "archaic",
        "uncountable"
      ]
    }
  ],
  "word": "pernicity"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pernicious",
        "3": "ity",
        "alt1": "pernic(ious)"
      },
      "expansion": "pernic(ious) + -ity",
      "name": "suffix"
    },
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "pernicitas"
      },
      "expansion": "Latin pernicitas",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "pernicious"
      },
      "expansion": "pernicious",
      "name": "m"
    }
  ],
  "etymology_text": "pernic(ious) + -ity, from Latin pernicitas. See pernicious.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "pernicity (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms derived from Latin",
        "English terms suffixed with -ity",
        "English terms with archaic senses",
        "English uncountable nouns"
      ],
      "glosses": [
        "swiftness; celerity"
      ],
      "links": [
        [
          "swiftness",
          "swiftness"
        ],
        [
          "celerity",
          "celerity"
        ]
      ],
      "raw_glosses": [
        "(archaic) swiftness; celerity"
      ],
      "tags": [
        "archaic",
        "uncountable"
      ]
    }
  ],
  "word": "pernicity"
}