"lost decade" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ja",
        "3": "失われた10年",
        "tr": "ushinawareta juu-nen"
      },
      "expansion": "Calque of Japanese 失われた10年 (ushinawareta juu-nen)",
      "name": "cal"
    }
  ],
  "etymology_text": "Calque of Japanese 失われた10年 (ushinawareta juu-nen).",
  "forms": [
    {
      "form": "lost decades",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lost decade (plural lost decades)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "History of Japan",
          "orig": "en:History of Japan",
          "parents": [
            "History of Asia",
            "Japan",
            "Asia",
            "History",
            "Earth",
            "Eurasia",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2023 September 23, Leo Lewis, “It takes a village”, in FT Weekend, Life & Arts, page 2",
          "text": "Japan's stagnant “lost decades” of the 1990s and 2000s, while relatively comfortable for millions of Japanese and even enviable to other countries around the world, have left an indelibly negative mark.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A period of economic stagnation, originally referring to Japan in the 1990s (later extended to the 2000s and sometimes the 2010s)."
      ],
      "id": "en-lost_decade-en-noun-Su6vmWyJ",
      "links": [
        [
          "stagnation",
          "stagnation"
        ],
        [
          "Japan",
          "Japan"
        ]
      ],
      "synonyms": [
        {
          "word": "Lost Decade"
        }
      ]
    }
  ],
  "word": "lost decade"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ja",
        "3": "失われた10年",
        "tr": "ushinawareta juu-nen"
      },
      "expansion": "Calque of Japanese 失われた10年 (ushinawareta juu-nen)",
      "name": "cal"
    }
  ],
  "etymology_text": "Calque of Japanese 失われた10年 (ushinawareta juu-nen).",
  "forms": [
    {
      "form": "lost decades",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lost decade (plural lost decades)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms calqued from Japanese",
        "English terms derived from Japanese",
        "English terms with quotations",
        "en:History of Japan"
      ],
      "examples": [
        {
          "ref": "2023 September 23, Leo Lewis, “It takes a village”, in FT Weekend, Life & Arts, page 2",
          "text": "Japan's stagnant “lost decades” of the 1990s and 2000s, while relatively comfortable for millions of Japanese and even enviable to other countries around the world, have left an indelibly negative mark.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A period of economic stagnation, originally referring to Japan in the 1990s (later extended to the 2000s and sometimes the 2010s)."
      ],
      "links": [
        [
          "stagnation",
          "stagnation"
        ],
        [
          "Japan",
          "Japan"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "Lost Decade"
    }
  ],
  "word": "lost decade"
}