"sick as a dog" meaning in English

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      "expansion": "sick as a dog (not comparable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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      "examples": [
        {
          "text": "I caught that new strain of flu and for three days I was as sick as a dog.",
          "type": "example"
        },
        {
          "ref": "1797, John Banks, The Albion Queens, or The Death of Mary, Queen of Scots: A Tragedy, J. Bell, page 32:",
          "text": "Ay, but thou knowest he's as uncertain as the wind; and if, instead of quarrelling with me, he should grow fond, he'd make me as sick as a dog.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Very ill."
      ],
      "id": "en-sick_as_a_dog-en-adj-bpgJjyhh",
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        [
          "ill",
          "ill"
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      "qualifier": "simile",
      "raw_glosses": [
        "(simile) Very ill."
      ],
      "synonyms": [
        {
          "word": "sick as a cat"
        },
        {
          "word": "sick as a parrot"
        }
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        "not-comparable"
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      "translations": [
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "Translations",
          "word": "zo ziek als een hond"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "sairas kuin koira"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "word": "malade comme un chien"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "Translations",
          "word": "bardzo chory"
        }
      ]
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  "word": "sick as a dog"
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  "lang_code": "en",
  "pos": "adj",
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      "examples": [
        {
          "text": "I caught that new strain of flu and for three days I was as sick as a dog.",
          "type": "example"
        },
        {
          "ref": "1797, John Banks, The Albion Queens, or The Death of Mary, Queen of Scots: A Tragedy, J. Bell, page 32:",
          "text": "Ay, but thou knowest he's as uncertain as the wind; and if, instead of quarrelling with me, he should grow fond, he'd make me as sick as a dog.",
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      "glosses": [
        "Very ill."
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          "ill",
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        "(simile) Very ill."
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        "not-comparable"
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  "synonyms": [
    {
      "word": "sick as a cat"
    },
    {
      "word": "sick as a parrot"
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  "translations": [
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "Translations",
      "word": "zo ziek als een hond"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "sairas kuin koira"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "word": "malade comme un chien"
    },
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      "sense": "Translations",
      "word": "bardzo chory"
    }
  ],
  "word": "sick as a dog"
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