"hush-hush" meaning in English

{
  "forms": [
    {
      "form": "more hush-hush",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most hush-hush",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hush-hush (comparative more hush-hush, superlative most hush-hush)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "English reduplicated coordinated pairs",
          "parents": [
            "Reduplicated coordinated pairs",
            "Coordinated pairs",
            "Reduplications",
            "Terms by etymology"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "59 41",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "69 31",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "The spy program was very hush-hush: no-one ever spoke of it.",
          "type": "example"
        }
      ],
      "glosses": [
        "Secret, not spoken of (or spoken of only in hushed whispers between insiders)."
      ],
      "id": "en-hush-hush-en-adj-chcPM0Z4",
      "links": [
        [
          "hushed",
          "hushed"
        ],
        [
          "insider",
          "insider"
        ]
      ]
    }
  ],
  "word": "hush-hush"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "hush-hush (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "54 46",
          "kind": "other",
          "name": "English reduplicated coordinated pairs",
          "parents": [
            "Reduplicated coordinated pairs",
            "Coordinated pairs",
            "Reduplications",
            "Terms by etymology"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "1933, The China Monthly Review, volume 67, page 64:",
          "text": "I find a very definite policy of hush-hush here about what Japan is doing […]",
          "type": "quote"
        }
      ],
      "glosses": [
        "secrecy; covert operation"
      ],
      "id": "en-hush-hush-en-noun-n1AvlXFo",
      "links": [
        [
          "secrecy",
          "secrecy"
        ],
        [
          "covert",
          "covert"
        ],
        [
          "operation",
          "operation"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "hush-hush"
}

{
  "categories": [
    "English adjectives",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English reduplicated coordinated pairs",
    "English uncountable nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "forms": [
    {
      "form": "more hush-hush",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most hush-hush",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hush-hush (comparative more hush-hush, superlative most hush-hush)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English terms with usage examples"
      ],
      "examples": [
        {
          "text": "The spy program was very hush-hush: no-one ever spoke of it.",
          "type": "example"
        }
      ],
      "glosses": [
        "Secret, not spoken of (or spoken of only in hushed whispers between insiders)."
      ],
      "links": [
        [
          "hushed",
          "hushed"
        ],
        [
          "insider",
          "insider"
        ]
      ]
    }
  ],
  "word": "hush-hush"
}

{
  "categories": [
    "English adjectives",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English reduplicated coordinated pairs",
    "English uncountable nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "hush-hush (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1933, The China Monthly Review, volume 67, page 64:",
          "text": "I find a very definite policy of hush-hush here about what Japan is doing […]",
          "type": "quote"
        }
      ],
      "glosses": [
        "secrecy; covert operation"
      ],
      "links": [
        [
          "secrecy",
          "secrecy"
        ],
        [
          "covert",
          "covert"
        ],
        [
          "operation",
          "operation"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "hush-hush"
}