"oughtn't" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ought",
        "3": "n't"
      },
      "expansion": "ought + -n't",
      "name": "suffix"
    }
  ],
  "etymology_text": "ought + -n't",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb form"
      },
      "expansion": "oughtn't",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Australian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Canadian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -n't",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Irish English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "New Zealand English",
          "parents": [],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "can't"
        },
        {
          "word": "couldn't"
        },
        {
          "word": "mayn't"
        },
        {
          "word": "mightn't"
        },
        {
          "word": "shan't"
        },
        {
          "word": "shouldn't"
        },
        {
          "word": "won't"
        },
        {
          "word": "wouldn't"
        }
      ],
      "glosses": [
        "(US, Canada, dated, rare) ought not (negative auxiliary)."
      ],
      "id": "en-oughtn't-en-verb-XYEdkG60",
      "links": [
        [
          "ought",
          "ought"
        ],
        [
          "not",
          "not"
        ]
      ],
      "raw_glosses": [
        "(UK, Ireland, Australia, New Zealand) (US, Canada, dated, rare) ought not (negative auxiliary)."
      ],
      "related": [
        {
          "word": "oughten"
        }
      ],
      "tags": [
        "Australia",
        "Ireland",
        "New-Zealand",
        "UK"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɔːnt/",
      "tags": [
        "UK"
      ]
    },
    {
      "ipa": "/ˈɔː.tənt/",
      "tags": [
        "UK"
      ]
    },
    {
      "ipa": "/ˈɔt.n̩t/",
      "tags": [
        "US"
      ]
    },
    {
      "ipa": "/ˈɑt.n̩t/",
      "tags": [
        "US"
      ]
    },
    {
      "rhymes": "-ɔːnt"
    },
    {
      "rhymes": "-ɔːtənt"
    },
    {
      "rhymes": "-ɔtn̩t"
    },
    {
      "rhymes": "-ɑtn̩t"
    },
    {
      "audio": "en-US oughtn't.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/66/En-US_oughtn%27t.ogg/En-US_oughtn%27t.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/66/En-US_oughtn%27t.ogg",
      "tags": [
        "US"
      ],
      "text": "Audio (US)"
    }
  ],
  "word": "oughtn't"
}

{
  "coordinate_terms": [
    {
      "word": "can't"
    },
    {
      "word": "couldn't"
    },
    {
      "word": "mayn't"
    },
    {
      "word": "mightn't"
    },
    {
      "word": "shan't"
    },
    {
      "word": "shouldn't"
    },
    {
      "word": "won't"
    },
    {
      "word": "wouldn't"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ought",
        "3": "n't"
      },
      "expansion": "ought + -n't",
      "name": "suffix"
    }
  ],
  "etymology_text": "ought + -n't",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "verb form"
      },
      "expansion": "oughtn't",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "oughten"
    }
  ],
  "senses": [
    {
      "categories": [
        "American English",
        "Australian English",
        "British English",
        "Canadian English",
        "English 1-syllable words",
        "English 2-syllable words",
        "English auxiliary verb forms",
        "English contractions",
        "English dated terms",
        "English defective verbs",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English non-lemma forms",
        "English terms suffixed with -n't",
        "English terms with IPA pronunciation",
        "English terms with audio links",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with rare senses",
        "English verb forms",
        "Irish English",
        "New Zealand English",
        "Rhymes:English/ɑtn̩t",
        "Rhymes:English/ɑtn̩t/1 syllable",
        "Rhymes:English/ɔtn̩t",
        "Rhymes:English/ɔtn̩t/1 syllable",
        "Rhymes:English/ɔːnt",
        "Rhymes:English/ɔːnt/1 syllable",
        "Rhymes:English/ɔːtənt",
        "Rhymes:English/ɔːtənt/2 syllables"
      ],
      "glosses": [
        "(US, Canada, dated, rare) ought not (negative auxiliary)."
      ],
      "links": [
        [
          "ought",
          "ought"
        ],
        [
          "not",
          "not"
        ]
      ],
      "raw_glosses": [
        "(UK, Ireland, Australia, New Zealand) (US, Canada, dated, rare) ought not (negative auxiliary)."
      ],
      "tags": [
        "Australia",
        "Ireland",
        "New-Zealand",
        "UK"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɔːnt/",
      "tags": [
        "UK"
      ]
    },
    {
      "ipa": "/ˈɔː.tənt/",
      "tags": [
        "UK"
      ]
    },
    {
      "ipa": "/ˈɔt.n̩t/",
      "tags": [
        "US"
      ]
    },
    {
      "ipa": "/ˈɑt.n̩t/",
      "tags": [
        "US"
      ]
    },
    {
      "rhymes": "-ɔːnt"
    },
    {
      "rhymes": "-ɔːtənt"
    },
    {
      "rhymes": "-ɔtn̩t"
    },
    {
      "rhymes": "-ɑtn̩t"
    },
    {
      "audio": "en-US oughtn't.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/66/En-US_oughtn%27t.ogg/En-US_oughtn%27t.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/66/En-US_oughtn%27t.ogg",
      "tags": [
        "US"
      ],
      "text": "Audio (US)"
    }
  ],
  "word": "oughtn't"
}