"unintentional" meaning in English

{
  "categories": [
    {
      "kind": "other",
      "name": "Terms prefixed with un-",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "un",
        "2": "intentional"
      },
      "expansion": "un- + intentional",
      "name": "ety-prefix"
    }
  ],
  "etymology_text": "un- + intentional",
  "forms": [
    {
      "form": "unintentional",
      "tags": [
        "positive"
      ]
    },
    {
      "form": "more unintentional",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most unintentional",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "more": "true"
      },
      "expansion": "[POS TABLE]",
      "name": "adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "antonyms": [
        {
          "word": "intentional"
        }
      ],
      "examples": [
        {
          "text": "I'm terribly sorry about the mistake with your name. It was completely unintentional."
        }
      ],
      "glosses": [
        "If something is unintentional, nobody planned or meant to do it."
      ],
      "id": "simple-unintentional-en-adj-Tp39YOy0"
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌʌnɪnˈtɛnʃənəl/"
    },
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-unintentional.wav",
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "unintentional"
}

{
  "categories": [
    "Terms prefixed with un-"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "un",
        "2": "intentional"
      },
      "expansion": "un- + intentional",
      "name": "ety-prefix"
    }
  ],
  "etymology_text": "un- + intentional",
  "forms": [
    {
      "form": "unintentional",
      "tags": [
        "positive"
      ]
    },
    {
      "form": "more unintentional",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most unintentional",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "more": "true"
      },
      "expansion": "[POS TABLE]",
      "name": "adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "antonyms": [
        {
          "word": "intentional"
        }
      ],
      "examples": [
        {
          "text": "I'm terribly sorry about the mistake with your name. It was completely unintentional."
        }
      ],
      "glosses": [
        "If something is unintentional, nobody planned or meant to do it."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌʌnɪnˈtɛnʃənəl/"
    },
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-unintentional.wav",
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "unintentional"
}