"to the quick" meaning in English

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  "lang_code": "en",
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      "_dis1": "0 0",
      "word": "cut to the quick"
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          "ref": "1904, Jack London, chapter 39, in The Sea-Wolf (Macmillan’s Standard Library), New York, N.Y.: Grosset & Dunlap, →OCLC:",
          "text": "Blood dripped from every finger-end, while the nails were broken to the quick.",
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      ],
      "glosses": [
        "To the level of living tissue."
      ],
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          "ref": "c. 1588–1593 (date written), William Shakespeare, “The Lamentable Tragedy of Titus Andronicus”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act IV, scene iv]:",
          "text": "Titus, I have touched thee to the quick.",
          "type": "quote"
        },
        {
          "ref": "1749, Henry Fielding, chapter 14, in Tom Jones, a Foundling:",
          "text": "This false evidence . . . stung me to the quick, and raised an indignation scarce conceivable.",
          "type": "quote"
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        {
          "ref": "1837, Charlotte Brontë, chapter 37, in Jane Eyre:",
          "text": "The powerlessness of the strong man touched my heart to the quick.",
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        "Very deeply; at one's most sensitive level of feeling."
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          "deeply",
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          "feeling"
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  "word": "to the quick"
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      "word": "cut to the quick"
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          "ref": "1904, Jack London, chapter 39, in The Sea-Wolf (Macmillan’s Standard Library), New York, N.Y.: Grosset & Dunlap, →OCLC:",
          "text": "Blood dripped from every finger-end, while the nails were broken to the quick.",
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        "To the level of living tissue."
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          "text": "Titus, I have touched thee to the quick.",
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          "ref": "1749, Henry Fielding, chapter 14, in Tom Jones, a Foundling:",
          "text": "This false evidence . . . stung me to the quick, and raised an indignation scarce conceivable.",
          "type": "quote"
        },
        {
          "ref": "1837, Charlotte Brontë, chapter 37, in Jane Eyre:",
          "text": "The powerlessness of the strong man touched my heart to the quick.",
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      ],
      "glosses": [
        "Very deeply; at one's most sensitive level of feeling."
      ],
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  "word": "to the quick"
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