"undescribable" meaning in English

{
  "forms": [
    {
      "form": "more undescribable",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most undescribable",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undescribable (comparative more undescribable, superlative most undescribable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "indescribable"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1825, Sir Walter Scott, chapter 30, in The Betrothed",
          "text": "But for the sudden making in of Damian to our rescue, it is undescribable to think what might have come of us.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of indescribable"
      ],
      "id": "en-undescribable-en-adj-wEvqopbP",
      "links": [
        [
          "indescribable",
          "indescribable#English"
        ]
      ],
      "related": [
        {
          "word": "undescribableness"
        },
        {
          "word": "undescribably"
        }
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "undescribable"
}

{
  "forms": [
    {
      "form": "more undescribable",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most undescribable",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undescribable (comparative more undescribable, superlative most undescribable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "undescribableness"
    },
    {
      "word": "undescribably"
    }
  ],
  "senses": [
    {
      "alt_of": [
        {
          "word": "indescribable"
        }
      ],
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1825, Sir Walter Scott, chapter 30, in The Betrothed",
          "text": "But for the sudden making in of Damian to our rescue, it is undescribable to think what might have come of us.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of indescribable"
      ],
      "links": [
        [
          "indescribable",
          "indescribable#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "undescribable"
}