"необязательно" meaning in Russian

{
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "необяза́тельный",
        "3": "-о"
      },
      "expansion": "необяза́тельный (neobjazátelʹnyj) + -о (-o)",
      "name": "af"
    }
  ],
  "etymology_text": "необяза́тельный (neobjazátelʹnyj) + -о (-o)",
  "forms": [
    {
      "form": "необяза́тельно",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "neobjazátelʹno",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "необяза́тельно"
      },
      "expansion": "необяза́тельно • (neobjazátelʹno)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "related": [
    {
      "_dis1": "0 0 0",
      "roman": "neobjazátelʹnyj",
      "word": "необяза́тельный"
    },
    {
      "_dis1": "0 0 0",
      "roman": "objazátelʹnyj",
      "word": "обяза́тельный"
    },
    {
      "_dis1": "0 0 0",
      "roman": "objazátelʹno",
      "word": "обяза́тельно"
    },
    {
      "_dis1": "0 0 0",
      "roman": "objazátelʹstvo",
      "word": "обяза́тельство"
    },
    {
      "_dis1": "0 0 0",
      "roman": "objázyvatʹ",
      "tags": [
        "imperfective"
      ],
      "word": "обя́зывать"
    },
    {
      "_dis1": "0 0 0",
      "roman": "objazátʹ",
      "tags": [
        "perfective"
      ],
      "word": "обяза́ть"
    },
    {
      "_dis1": "0 0 0",
      "roman": "objázyvatʹsja",
      "tags": [
        "imperfective"
      ],
      "word": "обя́зываться"
    },
    {
      "_dis1": "0 0 0",
      "roman": "objazátʹsja",
      "tags": [
        "perfective"
      ],
      "word": "обяза́ться"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "_dis": "50 0 50",
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "50 0 50",
          "kind": "other",
          "name": "Russian terms suffixed with -о",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "optionally"
      ],
      "id": "en-необязательно-ru-adv--5MY6Yyy",
      "links": [
        [
          "optionally",
          "optionally"
        ]
      ]
    },
    {
      "glosses": [
        "unnecessarily"
      ],
      "id": "en-необязательно-ru-adv-cSvu8JOv",
      "links": [
        [
          "unnecessarily",
          "unnecessarily"
        ]
      ]
    },
    {
      "categories": [
        {
          "_dis": "50 0 50",
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "50 0 50",
          "kind": "other",
          "name": "Russian terms suffixed with -о",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "unobligingly"
      ],
      "id": "en-необязательно-ru-adv-hR97LZHZ",
      "links": [
        [
          "unobligingly",
          "unobligingly"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nʲɪəbʲɪˈzatʲɪlʲnə]"
    }
  ],
  "word": "необязательно"
}

{
  "categories": [
    "Russian 6-syllable words",
    "Russian adverbs",
    "Russian entries with incorrect language header",
    "Russian lemmas",
    "Russian terms suffixed with -о",
    "Russian terms with IPA pronunciation"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "необяза́тельный",
        "3": "-о"
      },
      "expansion": "необяза́тельный (neobjazátelʹnyj) + -о (-o)",
      "name": "af"
    }
  ],
  "etymology_text": "необяза́тельный (neobjazátelʹnyj) + -о (-o)",
  "forms": [
    {
      "form": "необяза́тельно",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "neobjazátelʹno",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "необяза́тельно"
      },
      "expansion": "необяза́тельно • (neobjazátelʹno)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "related": [
    {
      "roman": "neobjazátelʹnyj",
      "word": "необяза́тельный"
    },
    {
      "roman": "objazátelʹnyj",
      "word": "обяза́тельный"
    },
    {
      "roman": "objazátelʹno",
      "word": "обяза́тельно"
    },
    {
      "roman": "objazátelʹstvo",
      "word": "обяза́тельство"
    },
    {
      "roman": "objázyvatʹ",
      "tags": [
        "imperfective"
      ],
      "word": "обя́зывать"
    },
    {
      "roman": "objazátʹ",
      "tags": [
        "perfective"
      ],
      "word": "обяза́ть"
    },
    {
      "roman": "objázyvatʹsja",
      "tags": [
        "imperfective"
      ],
      "word": "обя́зываться"
    },
    {
      "roman": "objazátʹsja",
      "tags": [
        "perfective"
      ],
      "word": "обяза́ться"
    }
  ],
  "senses": [
    {
      "glosses": [
        "optionally"
      ],
      "links": [
        [
          "optionally",
          "optionally"
        ]
      ]
    },
    {
      "glosses": [
        "unnecessarily"
      ],
      "links": [
        [
          "unnecessarily",
          "unnecessarily"
        ]
      ]
    },
    {
      "glosses": [
        "unobligingly"
      ],
      "links": [
        [
          "unobligingly",
          "unobligingly"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nʲɪəbʲɪˈzatʲɪlʲnə]"
    }
  ],
  "word": "необязательно"
}