"vanvett" meaning in Swedish

{
  "etymology_templates": [
    {
      "args": {
        "1": "sv",
        "2": "gmq-osw",
        "3": "vanvit",
        "4": "",
        "5": "folly"
      },
      "expansion": "Old Swedish vanvit (“folly”)",
      "name": "der"
    },
    {
      "args": {
        "1": "sv",
        "2": "van-",
        "3": "vett"
      },
      "expansion": "van- + vett",
      "name": "af"
    },
    {
      "args": {
        "1": "da",
        "2": "vanvid"
      },
      "expansion": "Danish vanvid",
      "name": "cog"
    }
  ],
  "etymology_text": "From Old Swedish vanvit (“folly”), equivalent to van- + vett. Compare Danish vanvid.",
  "forms": [
    {
      "form": "no-table-tags",
      "source": "declension",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "l",
      "source": "declension",
      "tags": [
        "inflection-template"
      ]
    },
    {
      "form": "vanvett",
      "source": "declension",
      "tags": [
        "indefinite",
        "nominative",
        "singular"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "nouns",
        "3": "",
        "g": "n",
        "g2": "",
        "head": "",
        "sort": ""
      },
      "expansion": "vanvett n",
      "name": "head"
    },
    {
      "args": {
        "1": "n"
      },
      "expansion": "vanvett n",
      "name": "sv-noun"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Swedish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Swedish links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Swedish terms prefixed with van-",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "vanvettig"
        }
      ],
      "glosses": [
        "madness"
      ],
      "id": "en-vanvett-sv-noun-FkLBGG8A",
      "links": [
        [
          "madness",
          "madness"
        ]
      ],
      "synonyms": [
        {
          "word": "vansinne"
        }
      ],
      "tags": [
        "neuter"
      ]
    }
  ],
  "word": "vanvett"
}

{
  "derived": [
    {
      "word": "vanvettig"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "sv",
        "2": "gmq-osw",
        "3": "vanvit",
        "4": "",
        "5": "folly"
      },
      "expansion": "Old Swedish vanvit (“folly”)",
      "name": "der"
    },
    {
      "args": {
        "1": "sv",
        "2": "van-",
        "3": "vett"
      },
      "expansion": "van- + vett",
      "name": "af"
    },
    {
      "args": {
        "1": "da",
        "2": "vanvid"
      },
      "expansion": "Danish vanvid",
      "name": "cog"
    }
  ],
  "etymology_text": "From Old Swedish vanvit (“folly”), equivalent to van- + vett. Compare Danish vanvid.",
  "forms": [
    {
      "form": "no-table-tags",
      "source": "declension",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "l",
      "source": "declension",
      "tags": [
        "inflection-template"
      ]
    },
    {
      "form": "vanvett",
      "source": "declension",
      "tags": [
        "indefinite",
        "nominative",
        "singular"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "sv",
        "2": "nouns",
        "3": "",
        "g": "n",
        "g2": "",
        "head": "",
        "sort": ""
      },
      "expansion": "vanvett n",
      "name": "head"
    },
    {
      "args": {
        "1": "n"
      },
      "expansion": "vanvett n",
      "name": "sv-noun"
    }
  ],
  "lang": "Swedish",
  "lang_code": "sv",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Swedish entries with incorrect language header",
        "Swedish lemmas",
        "Swedish links with redundant wikilinks",
        "Swedish neuter nouns",
        "Swedish nouns",
        "Swedish terms derived from Old Swedish",
        "Swedish terms prefixed with van-"
      ],
      "glosses": [
        "madness"
      ],
      "links": [
        [
          "madness",
          "madness"
        ]
      ],
      "tags": [
        "neuter"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "vansinne"
    }
  ],
  "word": "vanvett"
}

{
  "called_from": "parser/328",
  "msg": "TABLE not properly closed",
  "path": [
    "vanvett"
  ],
  "section": "Swedish",
  "subsection": "noun",
  "title": "vanvett",
  "trace": "started on line 4, detected on line 34"
}

{
  "called_from": "parser/304",
  "msg": "HTML tag <div> not properly closed",
  "path": [
    "vanvett"
  ],
  "section": "Swedish",
  "subsection": "noun",
  "title": "vanvett",
  "trace": "started on line 2, detected on line 34"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </div>",
  "path": [
    "vanvett"
  ],
  "section": "Swedish",
  "subsection": "noun",
  "title": "vanvett",
  "trace": ""
}