"underexercised" meaning in English

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  "etymology_text": "From under- + exercised.",
  "forms": [
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      "form": "more underexercised",
      "tags": [
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    {
      "form": "most underexercised",
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        "superlative"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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        {
          "ref": "2009 May 9, Michael Powell, “To the Hardy, Lady Liberty’s Crown Beckons Anew”, in New York Times:",
          "text": "(This might surprise the millions of underexercised, wide-beamed Americans who nonetheless managed to plant two sneakered feet on the crown’s landing in hazy humidity).",
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        }
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      "glosses": [
        "Having inadequate exercise."
      ],
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          "exercise",
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  "word": "underexercised"
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  ],
  "etymology_text": "From under- + exercised.",
  "forms": [
    {
      "form": "more underexercised",
      "tags": [
        "comparative"
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    },
    {
      "form": "most underexercised",
      "tags": [
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  "pos": "adj",
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          "ref": "2009 May 9, Michael Powell, “To the Hardy, Lady Liberty’s Crown Beckons Anew”, in New York Times:",
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        }
      ],
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        "Having inadequate exercise."
      ],
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        [
          "exercise",
          "exercise"
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