"let slip" meaning in English

{
  "forms": [
    {
      "form": "lets slip",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "letting slip",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "let slip",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "let slip",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "let<,,let> slip"
      },
      "expansion": "let slip (third-person singular simple present lets slip, present participle letting slip, simple past and past participle let slip)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Danish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Russian translations",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "He finally let slip that they plan to take over the business.",
          "type": "example"
        },
        {
          "ref": "1909 December 29, Jack London, “The Whale Tooth”, in South Sea Tales, New York, N.Y.: The Macmillan Company, published October 1911, →OCLC, page 61:",
          "text": "The frizzle-headed man-eaters were loath to leave their fleshpots so long as the harvest of human carcases was plentiful. Sometimes, when the harvest was too plentiful, they imposed on the missionaries by letting the word slip out that on such a day there would be a killing and a barbecue.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To divulge a secret, as by accident or mistake."
      ],
      "id": "en-let_slip-en-verb-yqhTRt3X",
      "links": [
        [
          "divulge",
          "divulge"
        ],
        [
          "secret",
          "secret#Noun"
        ],
        [
          "accident",
          "accident"
        ],
        [
          "mistake",
          "mistake#Noun"
        ]
      ],
      "raw_glosses": [
        "(transitive, idiomatic) To divulge a secret, as by accident or mistake."
      ],
      "tags": [
        "idiomatic",
        "transitive"
      ],
      "translations": [
        {
          "code": "da",
          "lang": "Danish",
          "sense": "to divulge a secret",
          "word": "fortale sig"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "proboltatʹsja",
          "sense": "to divulge a secret",
          "word": "проболтаться"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "progovoritʹsja",
          "sense": "to divulge a secret",
          "word": "проговориться"
        }
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-let slip.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/18/En-au-let_slip.ogg/En-au-let_slip.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/1/18/En-au-let_slip.ogg"
    }
  ],
  "word": "let slip"
}

{
  "forms": [
    {
      "form": "lets slip",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "letting slip",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "let slip",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "let slip",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "let<,,let> slip"
      },
      "expansion": "let slip (third-person singular simple present lets slip, present participle letting slip, simple past and past participle let slip)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English terms with quotations",
        "English terms with usage examples",
        "English transitive verbs",
        "English verbs",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Danish translations",
        "Terms with Russian translations"
      ],
      "examples": [
        {
          "text": "He finally let slip that they plan to take over the business.",
          "type": "example"
        },
        {
          "ref": "1909 December 29, Jack London, “The Whale Tooth”, in South Sea Tales, New York, N.Y.: The Macmillan Company, published October 1911, →OCLC, page 61:",
          "text": "The frizzle-headed man-eaters were loath to leave their fleshpots so long as the harvest of human carcases was plentiful. Sometimes, when the harvest was too plentiful, they imposed on the missionaries by letting the word slip out that on such a day there would be a killing and a barbecue.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To divulge a secret, as by accident or mistake."
      ],
      "links": [
        [
          "divulge",
          "divulge"
        ],
        [
          "secret",
          "secret#Noun"
        ],
        [
          "accident",
          "accident"
        ],
        [
          "mistake",
          "mistake#Noun"
        ]
      ],
      "raw_glosses": [
        "(transitive, idiomatic) To divulge a secret, as by accident or mistake."
      ],
      "tags": [
        "idiomatic",
        "transitive"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-let slip.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/1/18/En-au-let_slip.ogg/En-au-let_slip.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/1/18/En-au-let_slip.ogg"
    }
  ],
  "translations": [
    {
      "code": "da",
      "lang": "Danish",
      "sense": "to divulge a secret",
      "word": "fortale sig"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "proboltatʹsja",
      "sense": "to divulge a secret",
      "word": "проболтаться"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "progovoritʹsja",
      "sense": "to divulge a secret",
      "word": "проговориться"
    }
  ],
  "word": "let slip"
}