"sérénissimement" meaning in French

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "sérénissime",
        "3": "-ment<id:adverbial>"
      },
      "expansion": "sérénissime + -ment",
      "name": "af"
    }
  ],
  "etymology_text": "From sérénissime + -ment.",
  "head_templates": [
    {
      "args": {},
      "expansion": "sérénissimement",
      "name": "fr-adv"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "French terms suffixed with -ment (adverbial)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "sereinement"
        }
      ],
      "glosses": [
        "superlative degree of sereinement"
      ],
      "id": "en-sérénissimement-fr-adv-lwi2vX04",
      "links": [
        [
          "sereinement",
          "sereinement#French"
        ]
      ],
      "raw_glosses": [
        "(rare) superlative degree of sereinement"
      ],
      "tags": [
        "form-of",
        "rare",
        "superlative"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/se.ʁe.ni.sim.mɑ̃/"
    }
  ],
  "word": "sérénissimement"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "sérénissime",
        "3": "-ment<id:adverbial>"
      },
      "expansion": "sérénissime + -ment",
      "name": "af"
    }
  ],
  "etymology_text": "From sérénissime + -ment.",
  "head_templates": [
    {
      "args": {},
      "expansion": "sérénissimement",
      "name": "fr-adv"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "French 5-syllable words",
        "French adverbs",
        "French entries with incorrect language header",
        "French lemmas",
        "French superlative adverbs",
        "French terms suffixed with -ment (adverbial)",
        "French terms with IPA pronunciation",
        "French terms with rare senses",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "form_of": [
        {
          "word": "sereinement"
        }
      ],
      "glosses": [
        "superlative degree of sereinement"
      ],
      "links": [
        [
          "sereinement",
          "sereinement#French"
        ]
      ],
      "raw_glosses": [
        "(rare) superlative degree of sereinement"
      ],
      "tags": [
        "form-of",
        "rare",
        "superlative"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/se.ʁe.ni.sim.mɑ̃/"
    }
  ],
  "word": "sérénissimement"
}