"痛恨" meaning in Japanese

{
  "forms": [
    {
      "form": "痛恨",
      "ruby": [
        [
          "痛",
          "つう"
        ],
        [
          "恨",
          "こん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "tsūkon",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "tuukon",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "つうこん",
      "roman": "tuukon",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "つうこん",
        "hhira": "つうこん"
      },
      "expansion": "痛(つう)恨(こん) • (tsūkon) ^(←つうこん (tuukon)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 2 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with multiple readings",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "agonizing mistake",
          "roman": "tsūkon no misu",
          "ruby": [
            [
              "痛恨",
              "つうこん"
            ]
          ],
          "text": "痛恨のミス"
        }
      ],
      "glosses": [
        "extreme regret"
      ],
      "id": "en-痛恨-ja-noun-HiDkSxhN",
      "links": [
        [
          "extreme",
          "extreme"
        ],
        [
          "regret",
          "regret"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "つうこん"
    },
    {
      "ipa": "[t͡sɨːkõ̞ɴ]"
    }
  ],
  "word": "痛恨"
}

{
  "forms": [
    {
      "form": "痛恨",
      "ruby": [
        [
          "痛",
          "つう"
        ],
        [
          "恨",
          "こん"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "tsūkon",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "tuukon",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "つうこん",
      "roman": "tuukon",
      "tags": [
        "hiragana",
        "historical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "つうこん",
        "hhira": "つうこん"
      },
      "expansion": "痛(つう)恨(こん) • (tsūkon) ^(←つうこん (tuukon)?)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms spelled with secondary school kanji",
        "Japanese terms spelled with sixth grade kanji",
        "Japanese terms with 2 kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with multiple readings",
        "Japanese terms with redundant sortkeys",
        "Japanese terms with usage examples",
        "Pages with 2 entries"
      ],
      "examples": [
        {
          "english": "agonizing mistake",
          "roman": "tsūkon no misu",
          "ruby": [
            [
              "痛恨",
              "つうこん"
            ]
          ],
          "text": "痛恨のミス"
        }
      ],
      "glosses": [
        "extreme regret"
      ],
      "links": [
        [
          "extreme",
          "extreme"
        ],
        [
          "regret",
          "regret"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "other": "つうこん"
    },
    {
      "ipa": "[t͡sɨːkõ̞ɴ]"
    }
  ],
  "word": "痛恨"
}

{
  "called_from": "parser/304",
  "msg": "HTML tag <span> not properly closed",
  "path": [
    "痛恨"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "痛恨",
  "trace": "started on line 2, detected on line 2"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "痛恨"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "痛恨",
  "trace": ""
}