"underthought" meaning in English

{
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      "expansion": "underthought",
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  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
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      "form_of": [
        {
          "word": "underthink"
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      "glosses": [
        "simple past and past participle of underthink"
      ],
      "id": "en-underthought-en-verb-SdqAIKrS",
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        [
          "underthink",
          "underthink#English"
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        "form-of",
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  "word": "underthought"
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{
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "thought"
      },
      "expansion": "under + thought",
      "name": "compound"
    }
  ],
  "etymology_text": "under + thought",
  "head_templates": [
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      "args": {
        "1": "en",
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      "expansion": "underthought",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "ref": "1974, John Boorman, Zardoz, London: Pan Books, page 32",
          "text": "\"That all sounds respectably scientific but what is May's underthought.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An unexpressed thought that lies below or informs another thought; a subtext or ulterior motive."
      ],
      "id": "en-underthought-en-noun-paeyF0br",
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        [
          "unexpressed",
          "unexpressed"
        ],
        [
          "thought",
          "thought"
        ]
      ]
    }
  ],
  "word": "underthought"
}

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  "etymology_number": 1,
  "head_templates": [
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      "expansion": "underthought",
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  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
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      "form_of": [
        {
          "word": "underthink"
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        "simple past and past participle of underthink"
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          "underthink#English"
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  "word": "underthought"
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{
  "categories": [
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  "etymology_number": 2,
  "etymology_templates": [
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        "2": "under",
        "3": "thought"
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      "expansion": "under + thought",
      "name": "compound"
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  "etymology_text": "under + thought",
  "head_templates": [
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      "expansion": "underthought",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "examples": [
        {
          "ref": "1974, John Boorman, Zardoz, London: Pan Books, page 32",
          "text": "\"That all sounds respectably scientific but what is May's underthought.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An unexpressed thought that lies below or informs another thought; a subtext or ulterior motive."
      ],
      "links": [
        [
          "unexpressed",
          "unexpressed"
        ],
        [
          "thought",
          "thought"
        ]
      ]
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  ],
  "word": "underthought"
}