"なく" meaning in Japanese

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "ない"
      },
      "expansion": "ない (nai)",
      "name": "ja-r"
    },
    {
      "args": {
        "1": "だ"
      },
      "expansion": "だ (da)",
      "name": "ja-r"
    }
  ],
  "etymology_text": "Regular adverbial form of ない (nai), when used as either a verb suffix or as the plain negative of the copula だ (da).",
  "forms": [
    {
      "form": "naku",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "adverb"
      },
      "expansion": "なく • (naku)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "extra": "nai",
          "word": "ない"
        }
      ],
      "glosses": [
        "adverbial or continuative form of ない (nai)"
      ],
      "id": "en-なく-ja-adv-3fvkLcDc",
      "links": [
        [
          "ない",
          "ない#Japanese"
        ]
      ],
      "related": [
        {
          "english": "to lose something",
          "roman": "nakusu",
          "ruby": [
            [
              "無",
              "な"
            ],
            [
              "亡",
              "な"
            ],
            [
              "失",
              "な"
            ]
          ],
          "word": "無くす, 亡くす, 失くす"
        },
        {
          "english": "even if not, even without",
          "roman": "nakutemo",
          "ruby": [
            [
              "無",
              "な"
            ]
          ],
          "word": "無くても"
        },
        {
          "english": "to lose something",
          "roman": "nakunasu",
          "ruby": [
            [
              "無",
              "な"
            ]
          ],
          "word": "無くなす"
        },
        {
          "roman": "nakunaru",
          "word": "無くなる: to disappear"
        },
        {
          "word": "to get lost"
        },
        {
          "word": "to run out"
        }
      ],
      "tags": [
        "adverbial",
        "continuative",
        "form-of"
      ]
    }
  ],
  "sounds": [
    {
      "other": "なく"
    },
    {
      "ipa": "[na̠kɯ̟ᵝ]"
    }
  ],
  "word": "なく"
}

{
  "categories": [
    "Japanese adverbs",
    "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 redundant sortkeys"
  ],
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "ない"
      },
      "expansion": "ない (nai)",
      "name": "ja-r"
    },
    {
      "args": {
        "1": "だ"
      },
      "expansion": "だ (da)",
      "name": "ja-r"
    }
  ],
  "etymology_text": "Regular adverbial form of ない (nai), when used as either a verb suffix or as the plain negative of the copula だ (da).",
  "forms": [
    {
      "form": "naku",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "adverb"
      },
      "expansion": "なく • (naku)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "adv",
  "related": [
    {
      "english": "to lose something",
      "roman": "nakusu",
      "ruby": [
        [
          "無",
          "な"
        ],
        [
          "亡",
          "な"
        ],
        [
          "失",
          "な"
        ]
      ],
      "word": "無くす, 亡くす, 失くす"
    },
    {
      "english": "even if not, even without",
      "roman": "nakutemo",
      "ruby": [
        [
          "無",
          "な"
        ]
      ],
      "word": "無くても"
    },
    {
      "english": "to lose something",
      "roman": "nakunasu",
      "ruby": [
        [
          "無",
          "な"
        ]
      ],
      "word": "無くなす"
    },
    {
      "roman": "nakunaru",
      "word": "無くなる: to disappear"
    },
    {
      "word": "to get lost"
    },
    {
      "word": "to run out"
    }
  ],
  "senses": [
    {
      "form_of": [
        {
          "extra": "nai",
          "word": "ない"
        }
      ],
      "glosses": [
        "adverbial or continuative form of ない (nai)"
      ],
      "links": [
        [
          "ない",
          "ない#Japanese"
        ]
      ],
      "tags": [
        "adverbial",
        "continuative",
        "form-of"
      ]
    }
  ],
  "sounds": [
    {
      "other": "なく"
    },
    {
      "ipa": "[na̠kɯ̟ᵝ]"
    }
  ],
  "word": "なく"
}

{
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "soft-redirect",
  "redirects": [
    "泣く",
    "鳴く"
  ],
  "word": "なく"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "なく"
  ],
  "section": "Japanese",
  "subsection": "adverb",
  "title": "なく",
  "trace": ""
}