"can't but" meaning in English

{
  "forms": [
    {
      "form": "can't but",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "couldn't but",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "can't<can't,-,couldn't,-> but"
      },
      "expansion": "can't but (third-person singular simple present can't but, no present participle, simple past couldn't but, no past participle)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "alt_of": [
        {
          "word": "cannot but"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "18th c, Jonathan Swift, Alexander Pope (later lines), Imitation of Horace, 1852, Charles Knight (collator), Half-hours with the Best Authors, Volume 4, page 188,\nBut here a grievance seems to lie, / All this is mine but till I die; / I can't but think 'twould sound more clever, / To me and to my heirs forever."
        },
        {
          "ref": "1848 November – 1850 December, William Makepeace Thackeray, “The Knights of the Temple”, in The History of Pendennis. […], volume I, London: Bradbury and Evans, […], published 1849, →OCLC, page 290:",
          "text": "[…] the man of letters can't but love the place which has been inhabited by so many of his brethren, […]",
          "type": "quote"
        },
        {
          "ref": "2004, David W. Scott, The Disillusioned: A Story of Our Times, Fraser Books, →ISBN, page 204:",
          "text": "I'd weave through the throng — scanning for empties to return while flirting, sniffing out kids smoking grass and sharing smokes with Ivor and Carl on the door. With a name like Carl you can imagine a six-foot tall and wide bouncer, but Ivor...I couldn't but help to think of the name as belonging to a skinny Welshman getting sand kicked into his face. His name didn't do him justice — this guy was almost as big as Carl and probably faster with his fists.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of cannot but."
      ],
      "id": "en-can't_but-en-verb-s4bQGoQQ",
      "links": [
        [
          "cannot but",
          "cannot but#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "no-past-participle",
        "no-present-participle"
      ]
    }
  ],
  "word": "can't but"
}

{
  "forms": [
    {
      "form": "can't but",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "couldn't but",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "can't<can't,-,couldn't,-> but"
      },
      "expansion": "can't but (third-person singular simple present can't but, no present participle, simple past couldn't but, no past participle)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "alt_of": [
        {
          "word": "cannot but"
        }
      ],
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms with quotations",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "text": "18th c, Jonathan Swift, Alexander Pope (later lines), Imitation of Horace, 1852, Charles Knight (collator), Half-hours with the Best Authors, Volume 4, page 188,\nBut here a grievance seems to lie, / All this is mine but till I die; / I can't but think 'twould sound more clever, / To me and to my heirs forever."
        },
        {
          "ref": "1848 November – 1850 December, William Makepeace Thackeray, “The Knights of the Temple”, in The History of Pendennis. […], volume I, London: Bradbury and Evans, […], published 1849, →OCLC, page 290:",
          "text": "[…] the man of letters can't but love the place which has been inhabited by so many of his brethren, […]",
          "type": "quote"
        },
        {
          "ref": "2004, David W. Scott, The Disillusioned: A Story of Our Times, Fraser Books, →ISBN, page 204:",
          "text": "I'd weave through the throng — scanning for empties to return while flirting, sniffing out kids smoking grass and sharing smokes with Ivor and Carl on the door. With a name like Carl you can imagine a six-foot tall and wide bouncer, but Ivor...I couldn't but help to think of the name as belonging to a skinny Welshman getting sand kicked into his face. His name didn't do him justice — this guy was almost as big as Carl and probably faster with his fists.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of cannot but."
      ],
      "links": [
        [
          "cannot but",
          "cannot but#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "no-past-participle",
        "no-present-participle"
      ]
    }
  ],
  "word": "can't but"
}