"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"
        }
      ],
      "examples": [
        {
          "text": "He finally let slip that they plan to take over the business.",
          "type": "example"
        }
      ],
      "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",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "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 audio links",
        "English terms with usage examples",
        "English transitive verbs",
        "English verbs"
      ],
      "examples": [
        {
          "text": "He finally let slip that they plan to take over the business.",
          "type": "example"
        }
      ],
      "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",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "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"
}