"よくぞ" meaning in Japanese

{
  "etymology_templates": [
    {
      "args": {
        "1": "良く",
        "2": "よく",
        "3": "ぞ",
        "t1": "",
        "t2": ""
      },
      "expansion": "良(よ)く (yoku) + ぞ (zo)",
      "name": "ja-compound"
    }
  ],
  "etymology_text": "From 良(よ)く (yoku) + ぞ (zo).",
  "forms": [
    {
      "form": "yoku zo",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "adverb",
        "2": "よく ぞ"
      },
      "expansion": "よくぞ • (yoku zo)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "adv",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "yoku",
          "word": "よく"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant manual transliterations",
          "parents": [
            "Terms with non-redundant manual transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ruby": [
            [
              "来",
              "き"
            ]
          ],
          "text": "よくぞここまで来たな。\nYoku zo koko made kita na."
        }
      ],
      "glosses": [
        "Alternative form of よく (yoku)"
      ],
      "id": "en-よくぞ-ja-adv-db5mTvUj",
      "links": [
        [
          "よく",
          "よく#Japanese"
        ]
      ],
      "raw_glosses": [
        "(emphatic) Alternative form of よく (yoku)"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "emphatic"
      ]
    }
  ],
  "sounds": [
    {
      "other": "よくぞ"
    },
    {
      "ipa": "[jo̞kɯ̟ᵝzo̞]"
    }
  ],
  "word": "よくぞ"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "良く",
        "2": "よく",
        "3": "ぞ",
        "t1": "",
        "t2": ""
      },
      "expansion": "良(よ)く (yoku) + ぞ (zo)",
      "name": "ja-compound"
    }
  ],
  "etymology_text": "From 良(よ)く (yoku) + ぞ (zo).",
  "forms": [
    {
      "form": "yoku zo",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "adverb",
        "2": "よく ぞ"
      },
      "expansion": "よくぞ • (yoku zo)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "adv",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "yoku",
          "word": "よく"
        }
      ],
      "categories": [
        "Japanese adverbs",
        "Japanese compound terms",
        "Japanese entries with incorrect language header",
        "Japanese hiragana",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with non-redundant manual transliterations",
        "Japanese terms with redundant sortkeys",
        "Japanese terms with usage examples",
        "Requests for translations of Japanese usage examples"
      ],
      "examples": [
        {
          "ruby": [
            [
              "来",
              "き"
            ]
          ],
          "text": "よくぞここまで来たな。\nYoku zo koko made kita na."
        }
      ],
      "glosses": [
        "Alternative form of よく (yoku)"
      ],
      "links": [
        [
          "よく",
          "よく#Japanese"
        ]
      ],
      "raw_glosses": [
        "(emphatic) Alternative form of よく (yoku)"
      ],
      "tags": [
        "alt-of",
        "alternative",
        "emphatic"
      ]
    }
  ],
  "sounds": [
    {
      "other": "よくぞ"
    },
    {
      "ipa": "[jo̞kɯ̟ᵝzo̞]"
    }
  ],
  "word": "よくぞ"
}