"sui" meaning in Old French

{
  "etymology_templates": [
    {
      "args": {
        "1": "fro",
        "2": "la",
        "3": "sum",
        "t": "I am"
      },
      "expansion": "Latin sum (“I am”)",
      "name": "inh"
    }
  ],
  "etymology_text": "From Latin sum (“I am”), influenced by fuī (“I was”) through the -ui.",
  "head_templates": [
    {
      "args": {
        "1": "fro",
        "2": "verb form"
      },
      "expansion": "sui",
      "name": "head"
    }
  ],
  "lang": "Old French",
  "lang_code": "fro",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 16 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "9 10 3 1 3 8 5 10 5 10 0 0 0 0 0 2 0 0 0 0 9 9 1 1 1 0 0 1 2 6",
          "kind": "other",
          "name": "Pages with 16 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "8 10 4 1 3 7 5 10 5 10 0 0 0 0 0 3 0 0 0 0 8 8 1 1 0 0 0 0 3 8",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "word": "estre"
        }
      ],
      "glosses": [
        "first-person singular present indicative of estre"
      ],
      "id": "en-sui-fro-verb-xMyAEMj0",
      "links": [
        [
          "estre",
          "estre#Old_French"
        ]
      ],
      "tags": [
        "first-person",
        "form-of",
        "indicative",
        "present",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsyi̯/",
      "note": "early"
    },
    {
      "ipa": "/ˈsɥi/",
      "note": "late"
    }
  ],
  "word": "sui"
}

{
  "categories": [
    "Pages with 16 entries",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fro",
        "2": "la",
        "3": "sum",
        "t": "I am"
      },
      "expansion": "Latin sum (“I am”)",
      "name": "inh"
    }
  ],
  "etymology_text": "From Latin sum (“I am”), influenced by fuī (“I was”) through the -ui.",
  "head_templates": [
    {
      "args": {
        "1": "fro",
        "2": "verb form"
      },
      "expansion": "sui",
      "name": "head"
    }
  ],
  "lang": "Old French",
  "lang_code": "fro",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Old French entries with incorrect language header",
        "Old French non-lemma forms",
        "Old French terms derived from Latin",
        "Old French terms inherited from Latin",
        "Old French verb forms",
        "Pages with 16 entries",
        "Pages with entries"
      ],
      "form_of": [
        {
          "word": "estre"
        }
      ],
      "glosses": [
        "first-person singular present indicative of estre"
      ],
      "links": [
        [
          "estre",
          "estre#Old_French"
        ]
      ],
      "tags": [
        "first-person",
        "form-of",
        "indicative",
        "present",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsyi̯/",
      "note": "early"
    },
    {
      "ipa": "/ˈsɥi/",
      "note": "late"
    }
  ],
  "word": "sui"
}