"ill-defined" meaning in English

{
  "antonyms": [
    {
      "word": "well-defined"
    }
  ],
  "derived": [
    {
      "_dis1": "0 0",
      "word": "ill-definedness"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ill",
        "3": "defined"
      },
      "expansion": "ill + defined",
      "name": "compound"
    }
  ],
  "etymology_text": "ill + defined",
  "forms": [
    {
      "form": "more ill-defined",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most ill-defined",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ill-defined (comparative more ill-defined, superlative most ill-defined)",
      "name": "en-adj"
    }
  ],
  "hyponyms": [
    {
      "_dis1": "0 0",
      "word": "defined"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "_dis": "89 11",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Poorly defined; blurry, out of focus; lacking a clear boundary."
      ],
      "id": "en-ill-defined-en-adj-FJ7aPTX4",
      "links": [
        [
          "define",
          "define"
        ],
        [
          "blurry",
          "blurry"
        ],
        [
          "focus",
          "focus"
        ],
        [
          "boundary",
          "boundary"
        ]
      ],
      "synonyms": [
        {
          "_dis1": "86 14",
          "sense": "poorly defined",
          "word": "fuzzy"
        }
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Defined in an inconsistent way."
      ],
      "id": "en-ill-defined-en-adj-mHZ6Z6Yy",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "inconsistent",
          "inconsistent"
        ]
      ],
      "raw_glosses": [
        "(mathematics) Defined in an inconsistent way."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0",
      "word": "hazy"
    },
    {
      "_dis1": "0 0",
      "word": "indistinct"
    }
  ],
  "word": "ill-defined"
}

{
  "antonyms": [
    {
      "word": "well-defined"
    }
  ],
  "categories": [
    "English adjectives",
    "English compound terms",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms"
  ],
  "derived": [
    {
      "word": "ill-definedness"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ill",
        "3": "defined"
      },
      "expansion": "ill + defined",
      "name": "compound"
    }
  ],
  "etymology_text": "ill + defined",
  "forms": [
    {
      "form": "more ill-defined",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most ill-defined",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ill-defined (comparative more ill-defined, superlative most ill-defined)",
      "name": "en-adj"
    }
  ],
  "hyponyms": [
    {
      "word": "defined"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "glosses": [
        "Poorly defined; blurry, out of focus; lacking a clear boundary."
      ],
      "links": [
        [
          "define",
          "define"
        ],
        [
          "blurry",
          "blurry"
        ],
        [
          "focus",
          "focus"
        ],
        [
          "boundary",
          "boundary"
        ]
      ]
    },
    {
      "categories": [
        "en:Mathematics"
      ],
      "glosses": [
        "Defined in an inconsistent way."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "inconsistent",
          "inconsistent"
        ]
      ],
      "raw_glosses": [
        "(mathematics) Defined in an inconsistent way."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "synonyms": [
    {
      "sense": "poorly defined",
      "word": "fuzzy"
    },
    {
      "word": "hazy"
    },
    {
      "word": "indistinct"
    }
  ],
  "word": "ill-defined"
}