"んだ" meaning in Japanese

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "のだ"
      },
      "expansion": "のだ",
      "name": "l"
    },
    {
      "args": {
        "1": "の",
        "pos": "particle of emphasis"
      },
      "expansion": "の (no, particle of emphasis)",
      "name": "ja-r"
    },
    {
      "args": {
        "1": "だ",
        "pos": "auxiliary verb of assertion"
      },
      "expansion": "だ (da, auxiliary verb of assertion)",
      "name": "ja-r"
    }
  ],
  "etymology_text": "Regular abbreviation of のだ, a compound of particle の (no, particle of emphasis) and だ (da, auxiliary verb of assertion).",
  "forms": [
    {
      "form": "nda",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "phrase",
        "2": "んだ"
      },
      "expansion": "んだ • (nda)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "no da",
          "word": "のだ"
        }
      ],
      "categories": [
        {
          "_dis": "100 0",
          "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"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Contraction of のだ (no da)."
      ],
      "id": "en-んだ-ja-phrase-hysWLe5D",
      "links": [
        [
          "のだ",
          "のだ#Japanese"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "contraction"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[n da̠]"
    }
  ],
  "word": "んだ"
}

{
  "etymology_number": 2,
  "forms": [
    {
      "form": "nda",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "phrase"
      },
      "expansion": "んだ • (nda)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Tōhoku Japanese",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "yes",
          "roman": "nda nda",
          "text": "んだんだ",
          "type": "example"
        },
        {
          "english": "it is probably so",
          "roman": "nda be",
          "text": "んだべ",
          "type": "example"
        }
      ],
      "glosses": [
        "it is so"
      ],
      "id": "en-んだ-ja-phrase-6Se4TBy5",
      "raw_glosses": [
        "(Tōhoku) it is so"
      ],
      "synonyms": [
        {
          "word": "そうだ"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nda̠]"
    }
  ],
  "word": "んだ"
}

{
  "categories": [
    "Japanese entries with incorrect language header",
    "Japanese hiragana",
    "Japanese lemmas",
    "Japanese links with redundant alt parameters",
    "Japanese links with redundant wikilinks",
    "Japanese phrases",
    "Japanese terms with IPA pronunciation",
    "Japanese terms with redundant sortkeys"
  ],
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "ja",
        "2": "のだ"
      },
      "expansion": "のだ",
      "name": "l"
    },
    {
      "args": {
        "1": "の",
        "pos": "particle of emphasis"
      },
      "expansion": "の (no, particle of emphasis)",
      "name": "ja-r"
    },
    {
      "args": {
        "1": "だ",
        "pos": "auxiliary verb of assertion"
      },
      "expansion": "だ (da, auxiliary verb of assertion)",
      "name": "ja-r"
    }
  ],
  "etymology_text": "Regular abbreviation of のだ, a compound of particle の (no, particle of emphasis) and だ (da, auxiliary verb of assertion).",
  "forms": [
    {
      "form": "nda",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "phrase",
        "2": "んだ"
      },
      "expansion": "んだ • (nda)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "no da",
          "word": "のだ"
        }
      ],
      "categories": [
        "Japanese contractions"
      ],
      "glosses": [
        "Contraction of のだ (no da)."
      ],
      "links": [
        [
          "のだ",
          "のだ#Japanese"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "contraction"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[n da̠]"
    }
  ],
  "word": "んだ"
}

{
  "categories": [
    "Japanese entries with incorrect language header",
    "Japanese hiragana",
    "Japanese lemmas",
    "Japanese links with redundant wikilinks",
    "Japanese phrases",
    "Japanese terms with IPA pronunciation",
    "Japanese terms with redundant sortkeys"
  ],
  "etymology_number": 2,
  "forms": [
    {
      "form": "nda",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "phrase"
      },
      "expansion": "んだ • (nda)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Japanese terms with usage examples",
        "Tōhoku Japanese"
      ],
      "examples": [
        {
          "english": "yes",
          "roman": "nda nda",
          "text": "んだんだ",
          "type": "example"
        },
        {
          "english": "it is probably so",
          "roman": "nda be",
          "text": "んだべ",
          "type": "example"
        }
      ],
      "glosses": [
        "it is so"
      ],
      "raw_glosses": [
        "(Tōhoku) it is so"
      ],
      "synonyms": [
        {
          "word": "そうだ"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[nda̠]"
    }
  ],
  "word": "んだ"
}