"once and again" meaning in All languages combined

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "once and again (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English coordinated pairs",
          "parents": [
            "Coordinated pairs",
            "Terms by etymology"
          ],
          "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 entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "More than once; repeatedly."
      ],
      "id": "en-once_and_again-en-adv-uAXgtBKl",
      "links": [
        [
          "repeatedly",
          "repeatedly"
        ]
      ],
      "raw_glosses": [
        "(dated) More than once; repeatedly."
      ],
      "synonyms": [
        {
          "word": "over and over"
        },
        {
          "word": "over and over again"
        },
        {
          "word": "time and again"
        },
        {
          "word": "repeatedly"
        }
      ],
      "tags": [
        "dated",
        "not-comparable"
      ]
    }
  ],
  "word": "once and again"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "once and again (not comparable)",
      "name": "en-adv"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "English adverbs",
        "English coordinated pairs",
        "English dated terms",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English terms with non-redundant non-automated sortkeys",
        "English uncomparable adverbs"
      ],
      "glosses": [
        "More than once; repeatedly."
      ],
      "links": [
        [
          "repeatedly",
          "repeatedly"
        ]
      ],
      "raw_glosses": [
        "(dated) More than once; repeatedly."
      ],
      "tags": [
        "dated",
        "not-comparable"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "over and over"
    },
    {
      "word": "over and over again"
    },
    {
      "word": "time and again"
    },
    {
      "word": "repeatedly"
    }
  ],
  "word": "once and again"
}