"quickness" meaning in English

{
  "categories": [
    {
      "kind": "other",
      "name": "Λέξεις με επίθημα -ness (αγγλικά)",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_text": ": quickness < quick + -ness",
  "forms": [
    {
      "form": "quickness"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "examples": [
        {
          "text": "He came with the quickness of lightning.",
          "translation": "Ήρθε με τη γρηγοράδα της αστραπής."
        },
        {
          "text": "≈ συνώνυμα: → δείτε τη λέξη speediness"
        }
      ],
      "glosses": [
        "η γρηγοράδα"
      ],
      "id": "el-quickness-en-noun-Sw8K4rEN"
    }
  ],
  "word": "quickness"
}

{
  "categories": [
    "Λέξεις με επίθημα -ness (αγγλικά)"
  ],
  "etymology_text": ": quickness < quick + -ness",
  "forms": [
    {
      "form": "quickness"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "examples": [
        {
          "text": "He came with the quickness of lightning.",
          "translation": "Ήρθε με τη γρηγοράδα της αστραπής."
        },
        {
          "text": "≈ συνώνυμα: → δείτε τη λέξη speediness"
        }
      ],
      "glosses": [
        "η γρηγοράδα"
      ]
    }
  ],
  "word": "quickness"
}