"improviso" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "improvisus",
        "4": "",
        "5": "unforeseen"
      },
      "expansion": "Latin improvisus (“unforeseen”)",
      "name": "der"
    },
    {
      "args": {
        "1": "it",
        "2": "improvviso"
      },
      "expansion": "Italian improvviso",
      "name": "cog"
    }
  ],
  "etymology_text": "From Latin improvisus (“unforeseen”); compare Italian improvviso.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "improviso (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": "Pages with 6 entries",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "16 25 17 9 7 3 9 4 9",
          "kind": "other",
          "name": "Pages with 6 entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "a. 1784, Samuel Johnson, \"Improviso Translation of the following lines of M. Benserade A Son Lit\""
        }
      ],
      "glosses": [
        "Not prepared beforehand; unpremeditated; extemporaneous."
      ],
      "id": "en-improviso-en-adj-47THagDS",
      "links": [
        [
          "unpremeditated",
          "unpremeditated"
        ],
        [
          "extemporaneous",
          "extemporaneous"
        ]
      ],
      "raw_glosses": [
        "(obsolete) Not prepared beforehand; unpremeditated; extemporaneous."
      ],
      "tags": [
        "not-comparable",
        "obsolete"
      ]
    }
  ],
  "word": "improviso"
}

{
  "categories": [
    "Pages with 6 entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "improvisus",
        "4": "",
        "5": "unforeseen"
      },
      "expansion": "Latin improvisus (“unforeseen”)",
      "name": "der"
    },
    {
      "args": {
        "1": "it",
        "2": "improvviso"
      },
      "expansion": "Italian improvviso",
      "name": "cog"
    }
  ],
  "etymology_text": "From Latin improvisus (“unforeseen”); compare Italian improvviso.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "improviso (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 derived from Latin",
        "English terms with obsolete senses",
        "English uncomparable adjectives",
        "Pages with 6 entries"
      ],
      "examples": [
        {
          "text": "a. 1784, Samuel Johnson, \"Improviso Translation of the following lines of M. Benserade A Son Lit\""
        }
      ],
      "glosses": [
        "Not prepared beforehand; unpremeditated; extemporaneous."
      ],
      "links": [
        [
          "unpremeditated",
          "unpremeditated"
        ],
        [
          "extemporaneous",
          "extemporaneous"
        ]
      ],
      "raw_glosses": [
        "(obsolete) Not prepared beforehand; unpremeditated; extemporaneous."
      ],
      "tags": [
        "not-comparable",
        "obsolete"
      ]
    }
  ],
  "word": "improviso"
}