"upon the instant" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
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      "expansion": "upon the instant (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "kind": "other",
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      "examples": [
        {
          "ref": "1843 December 19, Charles Dickens, “Stave Two. The First of the Three Spirits.”, in A Christmas Carol. In Prose. Being a Ghost Story of Christmas, London: Chapman & Hall, […], →OCLC, page 42:",
          "text": "Light flashed up in the room upon the instant, and the curtains of his bed were drawn.",
          "type": "quote"
        },
        {
          "ref": "1886 January 5, Robert Louis Stevenson, “Doctor Lanyon’s Narrative”, in Strange Case of Dr Jekyll and Mr Hyde, London: Longmans, Green, and Co., →OCLC, page 103:",
          "text": "Or, if you shall so prefer to choose, a new province of knowledge and new avenues to fame and power shall be laid open to you, here, in this room, upon the instant; and your sight shall be blasted by a prodigy to stagger the unbelief of Satan.",
          "type": "quote"
        },
        {
          "ref": "1908, Howard Pyle, “The Terrific Encounter With the One-eyed Little Gentleman in Black”, in The Ruby of Kishmoor, New York, N.Y., London: Harper & Brothers Publishers, page 34:",
          "text": "\"That ball!\" he cried, in a hoarse and raucous voice. \"That ivory ball! Give it to me upon the instant!\"",
          "type": "quote"
        }
      ],
      "glosses": [
        "Immediately, right away."
      ],
      "id": "en-upon_the_instant-en-adv-7luYeQ5W",
      "links": [
        [
          "Immediately",
          "immediately#Adverb"
        ],
        [
          "right away",
          "right away#Adverb"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, dated) Immediately, right away."
      ],
      "synonyms": [
        {
          "word": "immediately"
        }
      ],
      "tags": [
        "dated",
        "idiomatic",
        "not-comparable"
      ]
    }
  ],
  "word": "upon the instant"
}

{
  "head_templates": [
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      "expansion": "upon the instant (not comparable)",
      "name": "en-adv"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
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        "English adverbs",
        "English dated terms",
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        "English idioms",
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        "English uncomparable adverbs",
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          "ref": "1843 December 19, Charles Dickens, “Stave Two. The First of the Three Spirits.”, in A Christmas Carol. In Prose. Being a Ghost Story of Christmas, London: Chapman & Hall, […], →OCLC, page 42:",
          "text": "Light flashed up in the room upon the instant, and the curtains of his bed were drawn.",
          "type": "quote"
        },
        {
          "ref": "1886 January 5, Robert Louis Stevenson, “Doctor Lanyon’s Narrative”, in Strange Case of Dr Jekyll and Mr Hyde, London: Longmans, Green, and Co., →OCLC, page 103:",
          "text": "Or, if you shall so prefer to choose, a new province of knowledge and new avenues to fame and power shall be laid open to you, here, in this room, upon the instant; and your sight shall be blasted by a prodigy to stagger the unbelief of Satan.",
          "type": "quote"
        },
        {
          "ref": "1908, Howard Pyle, “The Terrific Encounter With the One-eyed Little Gentleman in Black”, in The Ruby of Kishmoor, New York, N.Y., London: Harper & Brothers Publishers, page 34:",
          "text": "\"That ball!\" he cried, in a hoarse and raucous voice. \"That ivory ball! Give it to me upon the instant!\"",
          "type": "quote"
        }
      ],
      "glosses": [
        "Immediately, right away."
      ],
      "links": [
        [
          "Immediately",
          "immediately#Adverb"
        ],
        [
          "right away",
          "right away#Adverb"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, dated) Immediately, right away."
      ],
      "synonyms": [
        {
          "word": "immediately"
        }
      ],
      "tags": [
        "dated",
        "idiomatic",
        "not-comparable"
      ]
    }
  ],
  "word": "upon the instant"
}