"por quê" meaning in Portuguese

{
  "head_templates": [
    {
      "args": {
        "hascomp": "no"
      },
      "expansion": "por quê (not comparable)",
      "name": "pt-adv"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Brazilian Portuguese",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Portuguese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Why complicate something so simple?",
          "text": "Complicar uma coisa tão simples, por quê?",
          "type": "example"
        }
      ],
      "glosses": [
        "why"
      ],
      "id": "en-por_quê-pt-adv-K-I8WF8V",
      "links": [
        [
          "why",
          "why"
        ]
      ],
      "qualifier": "ending a question or as a standalone sentence",
      "raw_glosses": [
        "(Brazil, ending a question or as a standalone sentence) why"
      ],
      "synonyms": [
        {
          "tags": [
            "Portugal"
          ],
          "word": "porquê"
        }
      ],
      "tags": [
        "Brazil",
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/puʁ.ˈke/",
      "tags": [
        "Brazil"
      ]
    }
  ],
  "word": "por quê"
}

{
  "head_templates": [
    {
      "args": {
        "hascomp": "no"
      },
      "expansion": "por quê (not comparable)",
      "name": "pt-adv"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Brazilian Portuguese",
        "Portuguese 2-syllable words",
        "Portuguese adverbs",
        "Portuguese entries with incorrect language header",
        "Portuguese lemmas",
        "Portuguese multiword terms",
        "Portuguese terms with IPA pronunciation",
        "Portuguese terms with usage examples",
        "Portuguese uncomparable adverbs"
      ],
      "examples": [
        {
          "english": "Why complicate something so simple?",
          "text": "Complicar uma coisa tão simples, por quê?",
          "type": "example"
        }
      ],
      "glosses": [
        "why"
      ],
      "links": [
        [
          "why",
          "why"
        ]
      ],
      "qualifier": "ending a question or as a standalone sentence",
      "raw_glosses": [
        "(Brazil, ending a question or as a standalone sentence) why"
      ],
      "tags": [
        "Brazil",
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/puʁ.ˈke/",
      "tags": [
        "Brazil"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "Portugal"
      ],
      "word": "porquê"
    }
  ],
  "word": "por quê"
}