"ostinatissime" meaning in Italian

{
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "adjective form",
        "g": "f"
      },
      "expansion": "ostinatissime f",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "ostinatissimo"
        }
      ],
      "glosses": [
        "feminine plural of ostinatissimo"
      ],
      "id": "en-ostinatissime-it-adj--efJm8ts",
      "links": [
        [
          "ostinatissimo",
          "ostinatissimo#Italian"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "plural"
      ]
    }
  ],
  "word": "ostinatissime"
}

{
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "adjective form",
        "g": "f"
      },
      "expansion": "ostinatissime f",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Italian adjective forms",
        "Italian entries with incorrect language header",
        "Italian non-lemma forms",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "form_of": [
        {
          "word": "ostinatissimo"
        }
      ],
      "glosses": [
        "feminine plural of ostinatissimo"
      ],
      "links": [
        [
          "ostinatissimo",
          "ostinatissimo#Italian"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "plural"
      ]
    }
  ],
  "word": "ostinatissime"
}