"not have the first idea" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb"
      },
      "expansion": "not have the first idea",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "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 entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English negative polarity items",
          "parents": [
            "Negative polarity items",
            "Terms by semantic function"
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          "source": "w"
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        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
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          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2005, Simon Riley, Beating Cancer. A Miracle on the NHS, page 189",
          "text": "For all her experience, she didn't have the first idea what it was like to have the disease.",
          "type": "quotation"
        },
        {
          "ref": "2010, Stephen Deas, The Thief-Taker's Apprentice",
          "text": "Reading them was another; and when it came to taking thoughts in his head and writing them on to paper, he didn't have the first idea where to start.",
          "type": "quotation"
        },
        {
          "ref": "2011, Jim Baggott, The First War of Physics",
          "text": "The decision had been made, and the world had now been advised. The Super would be built. But the scientists at Los Alamos didn't really have the first idea how to do it.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To not know anything about something."
      ],
      "id": "en-not_have_the_first_idea-en-verb-X9PzMApj",
      "synonyms": [
        {
          "word": "not know the first thing"
        },
        {
          "word": "not have the faintest idea"
        }
      ]
    }
  ],
  "word": "not have the first idea"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb"
      },
      "expansion": "not have the first idea",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English negative polarity items",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "English verbs"
      ],
      "examples": [
        {
          "ref": "2005, Simon Riley, Beating Cancer. A Miracle on the NHS, page 189",
          "text": "For all her experience, she didn't have the first idea what it was like to have the disease.",
          "type": "quotation"
        },
        {
          "ref": "2010, Stephen Deas, The Thief-Taker's Apprentice",
          "text": "Reading them was another; and when it came to taking thoughts in his head and writing them on to paper, he didn't have the first idea where to start.",
          "type": "quotation"
        },
        {
          "ref": "2011, Jim Baggott, The First War of Physics",
          "text": "The decision had been made, and the world had now been advised. The Super would be built. But the scientists at Los Alamos didn't really have the first idea how to do it.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To not know anything about something."
      ],
      "synonyms": [
        {
          "word": "not know the first thing"
        },
        {
          "word": "not have the faintest idea"
        }
      ]
    }
  ],
  "word": "not have the first idea"
}