"crise existentielle" meaning in French

{
  "forms": [
    {
      "form": "crises existentielles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "crise existentielle f (plural crises existentielles)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Psychology",
          "orig": "fr:Psychology",
          "parents": [
            "Social sciences",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "existential crisis"
      ],
      "id": "en-crise_existentielle-fr-noun-Q-WLUgb-",
      "links": [
        [
          "existential crisis",
          "existential crisis"
        ]
      ],
      "related": [
        {
          "word": "crise identitaire"
        }
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/kʁiz ɛɡ.zis.tɑ̃.sjɛl/"
    }
  ],
  "word": "crise existentielle"
}

{
  "forms": [
    {
      "form": "crises existentielles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "crise existentielle f (plural crises existentielles)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "related": [
    {
      "word": "crise identitaire"
    }
  ],
  "senses": [
    {
      "categories": [
        "French countable nouns",
        "French entries with incorrect language header",
        "French feminine nouns",
        "French lemmas",
        "French multiword terms",
        "French nouns",
        "French nouns with red links in their headword lines",
        "French terms with IPA pronunciation",
        "Pages with 1 entry",
        "Pages with entries",
        "fr:Psychology"
      ],
      "glosses": [
        "existential crisis"
      ],
      "links": [
        [
          "existential crisis",
          "existential crisis"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/kʁiz ɛɡ.zis.tɑ̃.sjɛl/"
    }
  ],
  "word": "crise existentielle"
}