"bat-batean" meaning in Basque

{
  "etymology_templates": [
    {
      "args": {
        "1": "eu",
        "2": "bat",
        "3": "batean"
      },
      "expansion": "bat + batean",
      "name": "af"
    }
  ],
  "etymology_text": "From bat + batean.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "bat-batean (not comparable)",
      "name": "eu-adv"
    }
  ],
  "hyphenation": [
    "bat-ba‧te‧an"
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Basque entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "suddenly"
      ],
      "id": "en-bat-batean-eu-adv-GCBJdJl-",
      "links": [
        [
          "suddenly",
          "suddenly"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "proscribed"
          ],
          "word": "bapatean"
        }
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/bapatean/"
    },
    {
      "ipa": "[ba.pa.t̪e.ãn]"
    },
    {
      "rhymes": "-ean"
    }
  ],
  "word": "bat-batean"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "eu",
        "2": "bat",
        "3": "batean"
      },
      "expansion": "bat + batean",
      "name": "af"
    }
  ],
  "etymology_text": "From bat + batean.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "bat-batean (not comparable)",
      "name": "eu-adv"
    }
  ],
  "hyphenation": [
    "bat-ba‧te‧an"
  ],
  "lang": "Basque",
  "lang_code": "eu",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Basque adverbs",
        "Basque compound terms",
        "Basque entries with incorrect language header",
        "Basque lemmas",
        "Basque multiword terms",
        "Basque terms with IPA pronunciation",
        "Basque uncomparable adverbs",
        "Pages with 1 entry",
        "Rhymes:Basque/ean",
        "Rhymes:Basque/ean/4 syllables"
      ],
      "glosses": [
        "suddenly"
      ],
      "links": [
        [
          "suddenly",
          "suddenly"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/bapatean/"
    },
    {
      "ipa": "[ba.pa.t̪e.ãn]"
    },
    {
      "rhymes": "-ean"
    }
  ],
  "synonyms": [
    {
      "tags": [
        "proscribed"
      ],
      "word": "bapatean"
    }
  ],
  "word": "bat-batean"
}