"have something on good authority" meaning in English

{
  "forms": [
    {
      "form": "has something on good authority",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "having something on good authority",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "had something on good authority",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "had something on good authority",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "have<has,,had> something on good authority"
      },
      "expansion": "have something on good authority (third-person singular simple present has something on good authority, present participle having something on good authority, simple past and past participle had something on good authority)",
      "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": "have it on good authority that …",
          "type": "example"
        }
      ],
      "glosses": [
        "To know from a reliable source (that)."
      ],
      "id": "en-have_something_on_good_authority-en-verb-TVk67Bo~",
      "links": [
        [
          "know",
          "know"
        ],
        [
          "reliable",
          "reliable"
        ],
        [
          "source",
          "source"
        ]
      ],
      "related": [
        {
          "word": "straight from the horse's mouth"
        },
        {
          "word": "know for a fact"
        },
        {
          "word": "good hands"
        }
      ],
      "synonyms": [
        {
          "word": "have it on excellent authority"
        }
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "note": "olla tieto luotettavasta lähteestä (subject in the adessive case)",
          "sense": "Translations"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "word": "savoir de source sûre"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "Translations",
          "tags": [
            "imperfective"
          ],
          "word": "wiedzieć o czymś z dobrego źródła"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "Translations",
          "word": "saber de buena tinta"
        }
      ]
    }
  ],
  "word": "have something on good authority"
}

{
  "forms": [
    {
      "form": "has something on good authority",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "having something on good authority",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "had something on good authority",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "had something on good authority",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "have<has,,had> something on good authority"
      },
      "expansion": "have something on good authority (third-person singular simple present has something on good authority, present participle having something on good authority, simple past and past participle had something on good authority)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "straight from the horse's mouth"
    },
    {
      "word": "know for a fact"
    },
    {
      "word": "good hands"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms with usage examples",
        "English verbs",
        "Translation table header lacks gloss"
      ],
      "examples": [
        {
          "text": "have it on good authority that …",
          "type": "example"
        }
      ],
      "glosses": [
        "To know from a reliable source (that)."
      ],
      "links": [
        [
          "know",
          "know"
        ],
        [
          "reliable",
          "reliable"
        ],
        [
          "source",
          "source"
        ]
      ],
      "synonyms": [
        {
          "word": "have it on excellent authority"
        }
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "note": "olla tieto luotettavasta lähteestä (subject in the adessive case)",
      "sense": "Translations"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "word": "savoir de source sûre"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "Translations",
      "tags": [
        "imperfective"
      ],
      "word": "wiedzieć o czymś z dobrego źródła"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "Translations",
      "word": "saber de buena tinta"
    }
  ],
  "word": "have something on good authority"
}