"油断大敵" meaning in Japanese

{
  "forms": [
    {
      "form": "油断大敵",
      "ruby": [
        [
          "油",
          "ゆ"
        ],
        [
          "断",
          "だん"
        ],
        [
          "大",
          "たい"
        ],
        [
          "敵",
          "てき"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "yudantaiteki",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "idiom",
        "2": "ゆだんたいてき"
      },
      "expansion": "油(ゆ)断(だん)大(たい)敵(てき) • (yudantaiteki)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese proverbs",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 4 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese yojijukugo",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "unpreparedness is the greatest enemy"
      ],
      "id": "en-油断大敵-ja-phrase-olssfCib",
      "links": [
        [
          "unpreparedness",
          "unpreparedness"
        ],
        [
          "greatest",
          "greatest"
        ],
        [
          "enemy",
          "enemy"
        ]
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "other": "ゆだんたいてき"
    },
    {
      "ipa": "[jɯ̟dã̠nta̠ite̞kʲi]"
    }
  ],
  "word": "油断大敵"
}

{
  "forms": [
    {
      "form": "油断大敵",
      "ruby": [
        [
          "油",
          "ゆ"
        ],
        [
          "断",
          "だん"
        ],
        [
          "大",
          "たい"
        ],
        [
          "敵",
          "てき"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "yudantaiteki",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "idiom",
        "2": "ゆだんたいてき"
      },
      "expansion": "油(ゆ)断(だん)大(たい)敵(てき) • (yudantaiteki)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese idioms",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese proverbs",
        "Japanese terms spelled with fifth grade kanji",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with sixth grade kanji",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms with 4 kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with redundant sortkeys",
        "Japanese yojijukugo",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "unpreparedness is the greatest enemy"
      ],
      "links": [
        [
          "unpreparedness",
          "unpreparedness"
        ],
        [
          "greatest",
          "greatest"
        ],
        [
          "enemy",
          "enemy"
        ]
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "other": "ゆだんたいてき"
    },
    {
      "ipa": "[jɯ̟dã̠nta̠ite̞kʲi]"
    }
  ],
  "word": "油断大敵"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "油断大敵"
  ],
  "section": "Japanese",
  "subsection": "idiom",
  "title": "油断大敵",
  "trace": ""
}