"nonpromising" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "non",
        "3": "promising"
      },
      "expansion": "non- + promising",
      "name": "prefix"
    }
  ],
  "etymology_text": "non- + promising",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "nonpromising (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "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 terms prefixed with non-",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2015 August 17, Anindita Banerjee et al., “Vitamin D and Alzheimer's Disease: Neurocognition to Therapeutics”, in International Journal of Alzheimer's Disease, volume 2015, →DOI",
          "text": "Apparently, either they are still in the trial period or some trials have shown nonpromising results.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "unpromising"
      ],
      "id": "en-nonpromising-en-adj--Kd9N5qG",
      "links": [
        [
          "unpromising",
          "unpromising"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "nonpromising"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "non",
        "3": "promising"
      },
      "expansion": "non- + promising",
      "name": "prefix"
    }
  ],
  "etymology_text": "non- + promising",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "nonpromising (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with non-",
        "English terms with quotations",
        "English uncomparable adjectives"
      ],
      "examples": [
        {
          "ref": "2015 August 17, Anindita Banerjee et al., “Vitamin D and Alzheimer's Disease: Neurocognition to Therapeutics”, in International Journal of Alzheimer's Disease, volume 2015, →DOI",
          "text": "Apparently, either they are still in the trial period or some trials have shown nonpromising results.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "unpromising"
      ],
      "links": [
        [
          "unpromising",
          "unpromising"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "nonpromising"
}