"bất chợt" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "bất",
        "gloss": "",
        "tr": "不"
      },
      "expansion": "bất (不)",
      "name": "l/vi/Latn"
    },
    {
      "args": {
        "1": "bất",
        "2": "不"
      },
      "expansion": "bất (不)",
      "name": "vi-l"
    },
    {
      "args": {
        "1": "vi",
        "2": "bất (<span class=\"Hani\" lang=\"vi\">不</span>)",
        "3": "chợt"
      },
      "expansion": "bất (不) + chợt",
      "name": "com"
    },
    {
      "args": {
        "1": "bất",
        "2": "",
        "3": "不"
      },
      "expansion": "bất (不)",
      "name": "vi-link"
    }
  ],
  "etymology_text": "bất (不) + chợt.\nThe morpheme bất (不) here is used as an emphatic particle, not a negator. See similar usage in bất thình lình, bất quá.",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "adverb",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "bất chợt",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "bất chợt",
      "name": "vi-adv"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "suddenly; unexpectedly; all of a sudden"
      ],
      "id": "en-bất_chợt-vi-adv-vNukyCij",
      "links": [
        [
          "suddenly",
          "suddenly"
        ],
        [
          "unexpectedly",
          "unexpectedly"
        ],
        [
          "all of a sudden",
          "all of a sudden"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʔɓət̚˧˦ t͡ɕəːt̚˧˨ʔ]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[ʔɓək̚˦˧˥ t͡ɕəːk̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ʔɓək̚˦˥ cəːk̚˨˩˨]",
      "note": "Saigon"
    }
  ],
  "word": "bất chợt"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "bất",
        "gloss": "",
        "tr": "不"
      },
      "expansion": "bất (不)",
      "name": "l/vi/Latn"
    },
    {
      "args": {
        "1": "bất",
        "2": "不"
      },
      "expansion": "bất (不)",
      "name": "vi-l"
    },
    {
      "args": {
        "1": "vi",
        "2": "bất (<span class=\"Hani\" lang=\"vi\">不</span>)",
        "3": "chợt"
      },
      "expansion": "bất (不) + chợt",
      "name": "com"
    },
    {
      "args": {
        "1": "bất",
        "2": "",
        "3": "不"
      },
      "expansion": "bất (不)",
      "name": "vi-link"
    }
  ],
  "etymology_text": "bất (不) + chợt.\nThe morpheme bất (不) here is used as an emphatic particle, not a negator. See similar usage in bất thình lình, bất quá.",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "adverb",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "bất chợt",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "bất chợt",
      "name": "vi-adv"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Vietnamese adverbs",
        "Vietnamese compound terms",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese terms with IPA pronunciation",
        "Vietnamese terms with redundant script codes"
      ],
      "glosses": [
        "suddenly; unexpectedly; all of a sudden"
      ],
      "links": [
        [
          "suddenly",
          "suddenly"
        ],
        [
          "unexpectedly",
          "unexpectedly"
        ],
        [
          "all of a sudden",
          "all of a sudden"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʔɓət̚˧˦ t͡ɕəːt̚˧˨ʔ]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[ʔɓək̚˦˧˥ t͡ɕəːk̚˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ʔɓək̚˦˥ cəːk̚˨˩˨]",
      "note": "Saigon"
    }
  ],
  "word": "bất chợt"
}