"ill-wisher" meaning in English

{
  "antonyms": [
    {
      "word": "well-wisher"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ill",
        "3": "wisher"
      },
      "expansion": "ill + wisher",
      "name": "compound"
    }
  ],
  "etymology_text": "ill + wisher",
  "forms": [
    {
      "form": "ill-wishers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ill-wisher (plural ill-wishers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "People",
          "orig": "en:People",
          "parents": [
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Someone who wishes harm on someone else."
      ],
      "id": "en-ill-wisher-en-noun--FpZFjXE"
    }
  ],
  "word": "ill-wisher"
}

{
  "antonyms": [
    {
      "word": "well-wisher"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ill",
        "3": "wisher"
      },
      "expansion": "ill + wisher",
      "name": "compound"
    }
  ],
  "etymology_text": "ill + wisher",
  "forms": [
    {
      "form": "ill-wishers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ill-wisher (plural ill-wishers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:People"
      ],
      "glosses": [
        "Someone who wishes harm on someone else."
      ]
    }
  ],
  "word": "ill-wisher"
}