"regrets only" meaning in All languages combined

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun"
      },
      "expansion": "regrets only",
      "name": "head"
    },
    {
      "args": {
        "1": "en",
        "2": "plurale tantum"
      },
      "expansion": "(plural only)",
      "name": "term-label"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English discourse markers",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "RSVP"
        }
      ],
      "glosses": [
        "Written on an invitation to request that the invited person reply only if they will not attend."
      ],
      "id": "en-regrets_only-en-noun-4a34asRa",
      "tags": [
        "plural",
        "plural-only"
      ]
    }
  ],
  "word": "regrets only"
}

{
  "coordinate_terms": [
    {
      "word": "RSVP"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "noun"
      },
      "expansion": "regrets only",
      "name": "head"
    },
    {
      "args": {
        "1": "en",
        "2": "plurale tantum"
      },
      "expansion": "(plural only)",
      "name": "term-label"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English discourse markers",
        "English ellipses",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English pluralia tantum",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "Written on an invitation to request that the invited person reply only if they will not attend."
      ],
      "tags": [
        "plural",
        "plural-only"
      ]
    }
  ],
  "word": "regrets only"
}