"fault-free" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "fault",
        "3": "-free"
      },
      "expansion": "fault + -free",
      "name": "af"
    }
  ],
  "etymology_text": "From fault + -free.",
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "fault-free"
      },
      "expansion": "fault-free (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -free",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2019 November 20, “Hull Trains prepares to introduce its five brand-new Hitachi bi-modes”, in Rail, page 20",
          "text": "Hull Trains Managing Director Louise Cheeseman explained: \"On arrival in the UK, they are required to pass fault-free running on the tracks as part of final safety checks, before undergoing the final stages of training and familiarisation with our staff.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Without any faults being evident."
      ],
      "id": "en-fault-free-en-adj-C2tYrCuy",
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "fault-free"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "fault",
        "3": "-free"
      },
      "expansion": "fault + -free",
      "name": "af"
    }
  ],
  "etymology_text": "From fault + -free.",
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "fault-free"
      },
      "expansion": "fault-free (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English terms suffixed with -free",
        "English terms with quotations",
        "English uncomparable adjectives"
      ],
      "examples": [
        {
          "ref": "2019 November 20, “Hull Trains prepares to introduce its five brand-new Hitachi bi-modes”, in Rail, page 20",
          "text": "Hull Trains Managing Director Louise Cheeseman explained: \"On arrival in the UK, they are required to pass fault-free running on the tracks as part of final safety checks, before undergoing the final stages of training and familiarisation with our staff.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Without any faults being evident."
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "word": "fault-free"
}