"s'en être" meaning in French

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  "etymology_text": "Suppletion of the verb \"to go\" by corresponding forms of the verb \"to be\" in the simple past tense is common in Romance languages (see simple past tense forms of Spanish and Portuguese ir).",
  "forms": [
    {
      "form": "s’ en être",
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      "expansion": "s’en être",
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  "lang": "French",
  "lang_code": "fr",
  "pos": "verb",
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          "english": "Exiled from the Crown lands, they went to request asylum in nearby provinces.",
          "ref": "1937, Léon Berman, chapter 15, in Histoire des Juifs de France des origines à nos jours, page 125:",
          "text": "Exilés du domaine de la Couronne, les proscrits s’en furent demander asile aux provinces limitrophes[.]",
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      ],
      "glosses": [
        "Used only in the simple past tense for s’en aller"
      ],
      "id": "en-s'en_être-fr-verb-NDmhrC7t",
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        [
          "s’en aller",
          "s'en aller#French"
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        "(formal or dated) Used only in the simple past tense for s’en aller"
      ],
      "tags": [
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  ],
  "sounds": [
    {
      "ipa": "/s‿ɑ̃.n‿ɛtʁ/"
    }
  ],
  "word": "s'en être"
}

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      "args": {
        "1": "es,pt",
        "2": "ir"
      },
      "expansion": "Spanish and Portuguese ir",
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  ],
  "etymology_text": "Suppletion of the verb \"to go\" by corresponding forms of the verb \"to be\" in the simple past tense is common in Romance languages (see simple past tense forms of Spanish and Portuguese ir).",
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    {
      "form": "s’ en être",
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      ],
      "glosses": [
        "Used only in the simple past tense for s’en aller"
      ],
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        [
          "s’en aller",
          "s'en aller#French"
        ]
      ],
      "raw_glosses": [
        "(formal or dated) Used only in the simple past tense for s’en aller"
      ],
      "tags": [
        "dated",
        "formal"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/s‿ɑ̃.n‿ɛtʁ/"
    }
  ],
  "word": "s'en être"
}