"diolch yn fawr" meaning in All languages combined

{
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "phrase"
      },
      "expansion": "diolch yn fawr",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Welsh phrasebook",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "thank you very much"
      ],
      "id": "en-diolch_yn_fawr-cy-phrase-MM4aHpwF",
      "links": [
        [
          "thank you very much",
          "thank you very much"
        ]
      ],
      "synonyms": [
        {
          "word": "diolch yn fawr iawn"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌdiɔlχ ən ˈvau̯r/"
    }
  ],
  "word": "diolch yn fawr"
}

{
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "phrase"
      },
      "expansion": "diolch yn fawr",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Welsh entries with incorrect language header",
        "Welsh lemmas",
        "Welsh multiword terms",
        "Welsh phrasebook",
        "Welsh phrases"
      ],
      "glosses": [
        "thank you very much"
      ],
      "links": [
        [
          "thank you very much",
          "thank you very much"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌdiɔlχ ən ˈvau̯r/"
    }
  ],
  "synonyms": [
    {
      "word": "diolch yn fawr iawn"
    }
  ],
  "word": "diolch yn fawr"
}