"fulliest" meaning in English

{
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        "2": "superlative adverb"
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      "expansion": "fulliest",
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  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
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          "name": "English entries with incorrect language header",
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          "source": "w"
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      "examples": [
        {
          "ref": "1603, William Covel, A Just and Temperate Defence of the Five Books \"Of Ecclesiastical Polity\"",
          "text": "And therefore, to your objections in this article, which are neither great nor many, I have framed my answer, most out of his mouth who fulliest understood this cause, and ought to be esteemed the best interpreter of his own meaning.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "most fully",
          "word": "fully"
        }
      ],
      "glosses": [
        "superlative form of fully: most fully"
      ],
      "id": "en-fulliest-en-adv-~vu7HEId",
      "links": [
        [
          "fully",
          "fully#English"
        ]
      ],
      "raw_glosses": [
        "(rare, dated) superlative form of fully: most fully"
      ],
      "tags": [
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        "form-of",
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    }
  ],
  "word": "fulliest"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "superlative adverb"
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      "expansion": "fulliest",
      "name": "head"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "English dated terms",
        "English entries with incorrect language header",
        "English non-lemma forms",
        "English superlative adjectives",
        "English superlative adverbs",
        "English terms with quotations",
        "English terms with rare senses",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1603, William Covel, A Just and Temperate Defence of the Five Books \"Of Ecclesiastical Polity\"",
          "text": "And therefore, to your objections in this article, which are neither great nor many, I have framed my answer, most out of his mouth who fulliest understood this cause, and ought to be esteemed the best interpreter of his own meaning.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "most fully",
          "word": "fully"
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      ],
      "glosses": [
        "superlative form of fully: most fully"
      ],
      "links": [
        [
          "fully",
          "fully#English"
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      ],
      "raw_glosses": [
        "(rare, dated) superlative form of fully: most fully"
      ],
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  "word": "fulliest"
}