"sans histoire" meaning in French

{
  "etymology_text": "Compare English have a history of something.",
  "head_templates": [
    {
      "args": {},
      "expansion": "sans histoire",
      "name": "fr-adv"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "an ordinary couple",
          "text": "un couple sans histoire",
          "type": "example"
        },
        {
          "english": "an ordinary man",
          "text": "un homme sans histoire",
          "type": "example"
        },
        {
          "english": "an uneventful evening",
          "text": "un soir sans histoire",
          "type": "example"
        }
      ],
      "glosses": [
        "ordinary; uneventful"
      ],
      "id": "en-sans_histoire-fr-adv-hoyxCF7L",
      "links": [
        [
          "ordinary",
          "ordinary"
        ],
        [
          "uneventful",
          "uneventful"
        ]
      ],
      "synonyms": [
        {
          "word": "sans histoires"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sɑ̃.z‿is.twaʁ/"
    }
  ],
  "word": "sans histoire"
}

{
  "etymology_text": "Compare English have a history of something.",
  "head_templates": [
    {
      "args": {},
      "expansion": "sans histoire",
      "name": "fr-adv"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "French adverbs",
        "French entries with incorrect language header",
        "French lemmas",
        "French multiword terms",
        "French terms with IPA pronunciation",
        "French terms with usage examples"
      ],
      "examples": [
        {
          "english": "an ordinary couple",
          "text": "un couple sans histoire",
          "type": "example"
        },
        {
          "english": "an ordinary man",
          "text": "un homme sans histoire",
          "type": "example"
        },
        {
          "english": "an uneventful evening",
          "text": "un soir sans histoire",
          "type": "example"
        }
      ],
      "glosses": [
        "ordinary; uneventful"
      ],
      "links": [
        [
          "ordinary",
          "ordinary"
        ],
        [
          "uneventful",
          "uneventful"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/sɑ̃.z‿is.twaʁ/"
    }
  ],
  "synonyms": [
    {
      "word": "sans histoires"
    }
  ],
  "word": "sans histoire"
}