"were it not for" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions prépositives en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "if it were not for"
    },
    {
      "form": "if it weren’t for"
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "prep",
  "pos_title": "Locution prépositive",
  "related": [
    {
      "tags": [
        "literary"
      ],
      "word": "had it not been for"
    },
    {
      "word": "if it had not been for"
    },
    {
      "word": "if it hadn’t been for"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Termes littéraires en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Sans. S’il n’y avait pas. Si … n’existait pas. Note d’usage : Introduit une condition irréelle du présent, le référent existant en réalité."
      ],
      "id": "fr-were_it_not_for-en-prep-t1QjPwVb",
      "tags": [
        "literary"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\wɚ ɪt ˈnɑt fɔɹ\\",
      "raw_tags": [
        "États-Unis"
      ]
    },
    {
      "ipa": "\\wə ɪt ˈnɒt fɔː\\"
    },
    {
      "ipa": "\\wə.ɹɪt ˈnɒt fɔː\\",
      "raw_tags": [
        "Royaume-Uni"
      ]
    }
  ],
  "word": "were it not for"
}

{
  "categories": [
    "Locutions prépositives en anglais",
    "anglais"
  ],
  "forms": [
    {
      "form": "if it were not for"
    },
    {
      "form": "if it weren’t for"
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "prep",
  "pos_title": "Locution prépositive",
  "related": [
    {
      "tags": [
        "literary"
      ],
      "word": "had it not been for"
    },
    {
      "word": "if it had not been for"
    },
    {
      "word": "if it hadn’t been for"
    }
  ],
  "senses": [
    {
      "categories": [
        "Termes littéraires en anglais"
      ],
      "glosses": [
        "Sans. S’il n’y avait pas. Si … n’existait pas. Note d’usage : Introduit une condition irréelle du présent, le référent existant en réalité."
      ],
      "tags": [
        "literary"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\wɚ ɪt ˈnɑt fɔɹ\\",
      "raw_tags": [
        "États-Unis"
      ]
    },
    {
      "ipa": "\\wə ɪt ˈnɒt fɔː\\"
    },
    {
      "ipa": "\\wə.ɹɪt ˈnɒt fɔː\\",
      "raw_tags": [
        "Royaume-Uni"
      ]
    }
  ],
  "word": "were it not for"
}