"sunkiausiai" meaning in Lithuanian

{
  "head_templates": [
    {
      "args": {
        "1": "lt",
        "2": "adverb"
      },
      "expansion": "sunkiausiai",
      "name": "head"
    }
  ],
  "lang": "Lithuanian",
  "lang_code": "lt",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lithuanian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "adverb from Adjective geras"
        }
      ],
      "glosses": [
        "Superlative form of adverb from Adjective geras"
      ],
      "id": "en-sunkiausiai-lt-adv-UpS7IRSJ",
      "links": [
        [
          "adverb",
          "adverb"
        ]
      ],
      "tags": [
        "form-of",
        "superlative"
      ]
    }
  ],
  "word": "sunkiausiai"
}

{
  "head_templates": [
    {
      "args": {
        "1": "lt",
        "2": "adverb"
      },
      "expansion": "sunkiausiai",
      "name": "head"
    }
  ],
  "lang": "Lithuanian",
  "lang_code": "lt",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Lithuanian adverbs",
        "Lithuanian entries with incorrect language header",
        "Lithuanian lemmas"
      ],
      "form_of": [
        {
          "word": "adverb from Adjective geras"
        }
      ],
      "glosses": [
        "Superlative form of adverb from Adjective geras"
      ],
      "links": [
        [
          "adverb",
          "adverb"
        ]
      ],
      "tags": [
        "form-of",
        "superlative"
      ]
    }
  ],
  "word": "sunkiausiai"
}