"何為れぞ" meaning in Japanese

{
  "etymology_text": "Classical Chinese 何為.",
  "forms": [
    {
      "form": "何為れぞ",
      "ruby": [
        [
          "何",
          "なん"
        ],
        [
          "為",
          "す"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "nansurezo",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "adverb",
        "2": "なんすれぞ"
      },
      "expansion": "何(なん)為(す)れぞ • (nansurezo)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "why?"
      ],
      "id": "en-何為れぞ-ja-adv-9bK5i~RL",
      "links": [
        [
          "why",
          "why"
        ],
        [
          "デジタル大辞泉",
          "w:ja:大辞泉#電子版"
        ],
        [
          "Tōkyō",
          "w:Tōkyō"
        ]
      ]
    }
  ],
  "word": "何為れぞ"
}

{
  "etymology_text": "Classical Chinese 何為.",
  "forms": [
    {
      "form": "何為れぞ",
      "ruby": [
        [
          "何",
          "なん"
        ],
        [
          "為",
          "す"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "nansurezo",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "adverb",
        "2": "なんすれぞ"
      },
      "expansion": "何(なん)為(す)れぞ • (nansurezo)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Japanese adverbs",
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant wikilinks",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms spelled with secondary school kanji",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written with two Han script characters"
      ],
      "glosses": [
        "why?"
      ],
      "links": [
        [
          "why",
          "why"
        ],
        [
          "デジタル大辞泉",
          "w:ja:大辞泉#電子版"
        ],
        [
          "Tōkyō",
          "w:Tōkyō"
        ]
      ]
    }
  ],
  "word": "何為れぞ"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "何為れぞ"
  ],
  "section": "Japanese",
  "subsection": "adverb",
  "title": "何為れぞ",
  "trace": ""
}