"through thick and thin" meaning in English

{
  "etymology_text": "From thick and thin, meaning: “thick (dense) and thin woodland; all obstacles in a path”.",
  "head_templates": [
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        "2": "adverb",
        "head": "through thick and thin"
      },
      "expansion": "through thick and thin",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
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          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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      ],
      "glosses": [
        "through all (especially grim, rough and difficult) conditions; in all weathers"
      ],
      "id": "en-through_thick_and_thin-en-adv-F5KCA2fa",
      "links": [
        [
          "in all weathers",
          "in all weathers"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) through all (especially grim, rough and difficult) conditions; in all weathers"
      ],
      "tags": [
        "idiomatic"
      ],
      "translations": [
        {
          "code": "af",
          "lang": "Afrikaans",
          "sense": "through all (difficult) conditions",
          "word": "deur dik en dun"
        },
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "through all (difficult) conditions",
          "word": "door dik en dun"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "through all (difficult) conditions",
          "word": "durch dick und dünn"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "through all (difficult) conditions",
          "word": "i vått och torrt"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "through all (difficult) conditions",
          "word": "i regn och rusk"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "through all (difficult) conditions",
          "word": "i ur och skur"
        }
      ]
    }
  ],
  "word": "through thick and thin"
}

{
  "etymology_text": "From thick and thin, meaning: “thick (dense) and thin woodland; all obstacles in a path”.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "adverb",
        "head": "through thick and thin"
      },
      "expansion": "through thick and thin",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
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        "Terms with Afrikaans translations",
        "Terms with Dutch translations",
        "Terms with German translations",
        "Terms with Swedish translations"
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      "glosses": [
        "through all (especially grim, rough and difficult) conditions; in all weathers"
      ],
      "links": [
        [
          "in all weathers",
          "in all weathers"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) through all (especially grim, rough and difficult) conditions; in all weathers"
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "translations": [
    {
      "code": "af",
      "lang": "Afrikaans",
      "sense": "through all (difficult) conditions",
      "word": "deur dik en dun"
    },
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "through all (difficult) conditions",
      "word": "door dik en dun"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "through all (difficult) conditions",
      "word": "durch dick und dünn"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "through all (difficult) conditions",
      "word": "i vått och torrt"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "through all (difficult) conditions",
      "word": "i regn och rusk"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "through all (difficult) conditions",
      "word": "i ur och skur"
    }
  ],
  "word": "through thick and thin"
}