"de tapadillo" meaning in Spanish

{
  "head_templates": [
    {
      "args": {},
      "expansion": "de tapadillo",
      "name": "es-adv"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "he was named in secret",
          "text": "fue nombrado de tapadillo",
          "type": "example"
        },
        {
          "english": "(please add an English translation of this quotation)",
          "ref": "1995, José Ignacio Madalena Calvo, Programa de diversificación curricular",
          "text": "O sea, la Constitución se metió en esa Legislatura, que después hemos llamado constituyente, casi de tapadillo",
          "type": "quotation"
        }
      ],
      "glosses": [
        "in secret; on the hush-hush"
      ],
      "id": "en-de_tapadillo-es-adv-4zF8FtsJ",
      "links": [
        [
          "on the hush-hush",
          "on the hush-hush"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) in secret; on the hush-hush"
      ],
      "synonyms": [
        {
          "word": "a cencerros tapados"
        },
        {
          "word": "a hurtadillas"
        },
        {
          "word": "de extranjis"
        },
        {
          "word": "a lo zorro"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "de tapadillo"
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "de tapadillo",
      "name": "es-adv"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "English terms with usage examples",
        "Requests for translations of Spanish quotations",
        "Spanish adverbs",
        "Spanish entries with incorrect language header",
        "Spanish idioms",
        "Spanish lemmas",
        "Spanish multiword terms",
        "Spanish terms with quotations"
      ],
      "examples": [
        {
          "english": "he was named in secret",
          "text": "fue nombrado de tapadillo",
          "type": "example"
        },
        {
          "english": "(please add an English translation of this quotation)",
          "ref": "1995, José Ignacio Madalena Calvo, Programa de diversificación curricular",
          "text": "O sea, la Constitución se metió en esa Legislatura, que después hemos llamado constituyente, casi de tapadillo",
          "type": "quotation"
        }
      ],
      "glosses": [
        "in secret; on the hush-hush"
      ],
      "links": [
        [
          "on the hush-hush",
          "on the hush-hush"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) in secret; on the hush-hush"
      ],
      "synonyms": [
        {
          "word": "a cencerros tapados"
        },
        {
          "word": "a hurtadillas"
        },
        {
          "word": "de extranjis"
        },
        {
          "word": "a lo zorro"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "word": "de tapadillo"
}