"un-" meaning in 英語

{
  "categories": [
    {
      "kind": "other",
      "name": "英語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語_接頭辞",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "unknown"
    },
    {
      "word": "undo"
    },
    {
      "word": "unable"
    },
    {
      "word": "unfair"
    }
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "prefix",
  "pos_title": "接頭辞",
  "senses": [
    {
      "glosses": [
        "「反対」、「無」の意味を添える。"
      ],
      "id": "ja-un--en-prefix-9gSCInrQ"
    },
    {
      "glosses": [
        "動詞につけて逆の動作を表す。（過去分詞形は1.の意味合いになる。）"
      ],
      "id": "ja-un--en-prefix-GJhEEZ4x"
    },
    {
      "glosses": [
        "名詞につけて「-を除去する」の意味を作る。"
      ],
      "id": "ja-un--en-prefix-fdt06nk3"
    }
  ],
  "synonyms": [
    {
      "word": "in-"
    },
    {
      "word": "non-"
    },
    {
      "word": "dis-"
    },
    {
      "word": "de-"
    },
    {
      "word": "re-"
    }
  ],
  "tags": [
    "morpheme"
  ],
  "word": "un-"
}

{
  "categories": [
    "英語",
    "英語_接頭辞"
  ],
  "derived": [
    {
      "word": "unknown"
    },
    {
      "word": "undo"
    },
    {
      "word": "unable"
    },
    {
      "word": "unfair"
    }
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "prefix",
  "pos_title": "接頭辞",
  "senses": [
    {
      "glosses": [
        "「反対」、「無」の意味を添える。"
      ]
    },
    {
      "glosses": [
        "動詞につけて逆の動作を表す。（過去分詞形は1.の意味合いになる。）"
      ]
    },
    {
      "glosses": [
        "名詞につけて「-を除去する」の意味を作る。"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "in-"
    },
    {
      "word": "non-"
    },
    {
      "word": "dis-"
    },
    {
      "word": "de-"
    },
    {
      "word": "re-"
    }
  ],
  "tags": [
    "morpheme"
  ],
  "word": "un-"
}