"fuck knows" meaning in English

{
  "etymology_text": "Probably a shortening of \"who the fuck knows\"",
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      "expansion": "fuck knows",
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  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
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        },
        {
          "kind": "other",
          "name": "Terms with Spanish translations",
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        }
      ],
      "examples": [
        {
          "text": "Fuck knows what we'll do now the car's broken down.",
          "type": "example"
        }
      ],
      "glosses": [
        "I don't know; nobody knows; it is unclear."
      ],
      "id": "en-fuck_knows-en-phrase-8iRdfwiL",
      "links": [
        [
          "I don't know",
          "I don't know"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, vulgar, followed by a wh-clause) I don't know; nobody knows; it is unclear."
      ],
      "raw_tags": [
        "followed by a wh-clause"
      ],
      "synonyms": [
        {
          "word": "God knows"
        },
        {
          "word": "who knows"
        }
      ],
      "tags": [
        "idiomatic",
        "vulgar"
      ],
      "translations": [
        {
          "code": "bg",
          "lang": "Bulgarian",
          "roman": "huj znae",
          "sense": "it is unclear",
          "word": "хуй знае"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "it is unclear",
          "word": "en minä vittu tiedä"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "it is unclear",
          "word": "vittuako minä tiedän"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "it is unclear",
          "word": "aucune putain d’idée"
        },
        {
          "code": "mt",
          "lang": "Maltese",
          "sense": "it is unclear",
          "word": "fejn iż-żobb naf"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "it is unclear",
          "word": "chuj wie"
        },
        {
          "code": "ro",
          "lang": "Romanian",
          "sense": "it is unclear",
          "word": "pula știe"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "xuj jevó znájet",
          "sense": "it is unclear",
          "word": "хуй его́ зна́ет"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "it is unclear",
          "word": "ni puta idea"
        }
      ]
    }
  ],
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    {
      "audio": "en-au-fuck knows.ogg",
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  ],
  "word": "fuck knows"
}

{
  "etymology_text": "Probably a shortening of \"who the fuck knows\"",
  "head_templates": [
    {
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      },
      "expansion": "fuck knows",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "English ellipses",
        "English entries with incorrect language header",
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        "English vulgarities",
        "Entries with translation boxes",
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        "Terms with Bulgarian translations",
        "Terms with Finnish translations",
        "Terms with French translations",
        "Terms with Maltese translations",
        "Terms with Polish translations",
        "Terms with Romanian translations",
        "Terms with Russian translations",
        "Terms with Spanish translations"
      ],
      "examples": [
        {
          "text": "Fuck knows what we'll do now the car's broken down.",
          "type": "example"
        }
      ],
      "glosses": [
        "I don't know; nobody knows; it is unclear."
      ],
      "links": [
        [
          "I don't know",
          "I don't know"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, vulgar, followed by a wh-clause) I don't know; nobody knows; it is unclear."
      ],
      "raw_tags": [
        "followed by a wh-clause"
      ],
      "tags": [
        "idiomatic",
        "vulgar"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-au-fuck knows.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/67/En-au-fuck_knows.ogg/En-au-fuck_knows.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/67/En-au-fuck_knows.ogg"
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  ],
  "synonyms": [
    {
      "word": "God knows"
    },
    {
      "word": "who knows"
    }
  ],
  "translations": [
    {
      "code": "bg",
      "lang": "Bulgarian",
      "roman": "huj znae",
      "sense": "it is unclear",
      "word": "хуй знае"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "it is unclear",
      "word": "en minä vittu tiedä"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "it is unclear",
      "word": "vittuako minä tiedän"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "it is unclear",
      "word": "aucune putain d’idée"
    },
    {
      "code": "mt",
      "lang": "Maltese",
      "sense": "it is unclear",
      "word": "fejn iż-żobb naf"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "it is unclear",
      "word": "chuj wie"
    },
    {
      "code": "ro",
      "lang": "Romanian",
      "sense": "it is unclear",
      "word": "pula știe"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "xuj jevó znájet",
      "sense": "it is unclear",
      "word": "хуй его́ зна́ет"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "it is unclear",
      "word": "ni puta idea"
    }
  ],
  "word": "fuck knows"
}