"letter-perfect" meaning in All languages combined

{
  "antonyms": [
    {
      "word": "unscrupulous"
    }
  ],
  "forms": [
    {
      "form": "more letter-perfect",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most letter-perfect",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "more"
      },
      "expansion": "letter-perfect (not generally comparable, comparative more letter-perfect, superlative most letter-perfect)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "He was able to write out the speeches of Hamlet, letter perfect. It was impressive to see how exactly he knew the wording."
        }
      ],
      "glosses": [
        "Exactly correct, correct in every letter."
      ],
      "id": "en-letter-perfect-en-adj-cxMjQn~J",
      "links": [
        [
          "correct",
          "correct"
        ]
      ],
      "related": [
        {
          "word": "picture-perfect"
        },
        {
          "word": "pitch-perfect"
        }
      ],
      "synonyms": [
        {
          "word": "letter perfect"
        }
      ],
      "tags": [
        "not-comparable",
        "usually"
      ]
    }
  ],
  "word": "letter-perfect"
}

{
  "antonyms": [
    {
      "word": "unscrupulous"
    }
  ],
  "forms": [
    {
      "form": "more letter-perfect",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most letter-perfect",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "more"
      },
      "expansion": "letter-perfect (not generally comparable, comparative more letter-perfect, superlative most letter-perfect)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "picture-perfect"
    },
    {
      "word": "pitch-perfect"
    }
  ],
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms"
      ],
      "examples": [
        {
          "text": "He was able to write out the speeches of Hamlet, letter perfect. It was impressive to see how exactly he knew the wording."
        }
      ],
      "glosses": [
        "Exactly correct, correct in every letter."
      ],
      "links": [
        [
          "correct",
          "correct"
        ]
      ],
      "tags": [
        "not-comparable",
        "usually"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "letter perfect"
    }
  ],
  "word": "letter-perfect"
}