"-었었-" meaning in Korean

{
  "etymology_templates": [
    {
      "args": {
        "1": "ko",
        "2": "-었-"
      },
      "expansion": "었 (-eot-)",
      "name": "m"
    }
  ],
  "etymology_text": "Formed through doubling the past tense suffix 었 (-eot-).",
  "forms": [
    {
      "form": "었었",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "-eosseot-",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "suffix"
      },
      "expansion": "었었 • (-eosseot-)",
      "name": "ko-pos"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Korean entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Korean terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Korean terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "I went to Korea (but I am no longer there, I came back).",
          "roman": "Han'gug-e gasseoss-eo-yo.",
          "text": "한국에 갔었어요.",
          "type": "example"
        },
        {
          "english": "A phone call came in (the phone is no longer ringing though).",
          "roman": "Jeonhwa-ga wasseot-seumnida.",
          "text": "전화가 왔었습니다.",
          "type": "example"
        },
        {
          "english": "Today, in the morning, it was very windy (but it's no longer windy).",
          "roman": "Oneul achim-e baram-i mani bureosseot-da.",
          "text": "오늘 아침에 바람이 많이 불었었다.",
          "type": "example"
        },
        {
          "english": "Last year, at our park, sunflowers grew well (but that's no longer the case).",
          "roman": "Jangnyeon-e uri gong'won-eseo haebaragi-ga jal pieosseot-da.",
          "text": "작년에 우리 공원에서 해바라기가 잘 피었었다.",
          "type": "example"
        }
      ],
      "glosses": [
        "-ed: A past tense marker going onto the main verb, adjective or copula of the sentence; it carries a meaning of finished action, however the state has also become different from the past."
      ],
      "id": "en--었었--ko-suffix-EELbiqNe",
      "links": [
        [
          "-ed",
          "-ed"
        ]
      ],
      "synonyms": [
        {
          "roman": "hada",
          "word": "였었 — used after 하다 verbs and adjectives"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʌ̹s͈ʌ̹t̚]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "other": "[어썯]"
    }
  ],
  "word": "-었었-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ko",
        "2": "-었-"
      },
      "expansion": "었 (-eot-)",
      "name": "m"
    }
  ],
  "etymology_text": "Formed through doubling the past tense suffix 었 (-eot-).",
  "forms": [
    {
      "form": "었었",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "-eosseot-",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "suffix"
      },
      "expansion": "었었 • (-eosseot-)",
      "name": "ko-pos"
    }
  ],
  "lang": "Korean",
  "lang_code": "ko",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Korean entries with incorrect language header",
        "Korean lemmas",
        "Korean suffixes",
        "Korean terms with IPA pronunciation",
        "Korean terms with redundant script codes",
        "Korean terms with redundant transliterations",
        "Korean terms with usage examples",
        "Korean yin-vowel forms"
      ],
      "examples": [
        {
          "english": "I went to Korea (but I am no longer there, I came back).",
          "roman": "Han'gug-e gasseoss-eo-yo.",
          "text": "한국에 갔었어요.",
          "type": "example"
        },
        {
          "english": "A phone call came in (the phone is no longer ringing though).",
          "roman": "Jeonhwa-ga wasseot-seumnida.",
          "text": "전화가 왔었습니다.",
          "type": "example"
        },
        {
          "english": "Today, in the morning, it was very windy (but it's no longer windy).",
          "roman": "Oneul achim-e baram-i mani bureosseot-da.",
          "text": "오늘 아침에 바람이 많이 불었었다.",
          "type": "example"
        },
        {
          "english": "Last year, at our park, sunflowers grew well (but that's no longer the case).",
          "roman": "Jangnyeon-e uri gong'won-eseo haebaragi-ga jal pieosseot-da.",
          "text": "작년에 우리 공원에서 해바라기가 잘 피었었다.",
          "type": "example"
        }
      ],
      "glosses": [
        "-ed: A past tense marker going onto the main verb, adjective or copula of the sentence; it carries a meaning of finished action, however the state has also become different from the past."
      ],
      "links": [
        [
          "-ed",
          "-ed"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʌ̹s͈ʌ̹t̚]",
      "tags": [
        "SK-Standard",
        "Seoul"
      ]
    },
    {
      "other": "[어썯]"
    }
  ],
  "synonyms": [
    {
      "roman": "hada",
      "word": "였었 — used after 하다 verbs and adjectives"
    }
  ],
  "word": "-었었-"
}