"-ois" meaning in Old French

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "fr",
            "2": "-ais",
            "3": "-ois"
          },
          "expansion": "French: -ais, -ois",
          "name": "desc"
        }
      ],
      "text": "French: -ais, -ois"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "nrf",
            "2": "-ais",
            "3": "-ouais"
          },
          "expansion": "Norman: -ais, -ouais",
          "name": "desc"
        }
      ],
      "text": "Norman: -ais, -ouais"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fro",
        "2": "LL.",
        "3": "-"
      },
      "expansion": "Late Latin",
      "name": "inh"
    },
    {
      "args": {
        "1": "fro",
        "2": "VL.",
        "3": "-iscus"
      },
      "expansion": "Vulgar Latin -iscus",
      "name": "inh"
    },
    {
      "args": {
        "1": "fro",
        "2": "la",
        "3": "-ēnsis"
      },
      "expansion": "Latin -ēnsis",
      "name": "inh"
    }
  ],
  "etymology_text": "In some senses from Late Latin, Vulgar Latin -iscus, in others from Latin -ēnsis.",
  "head_templates": [
    {
      "args": {
        "1": "fro",
        "2": "suffix"
      },
      "expansion": "-ois",
      "name": "head"
    }
  ],
  "lang": "Old French",
  "lang_code": "fro",
  "pos": "suffix",
  "senses": [
    {
      "glosses": [
        "used to form nationalities"
      ],
      "id": "en--ois-fro-suffix-h~nDUHZE",
      "tags": [
        "morpheme"
      ]
    },
    {
      "examples": [
        {
          "text": "françois (“French”)"
        },
        {
          "text": "anglois (“English”)"
        }
      ],
      "glosses": [
        "used to form names of languages"
      ],
      "id": "en--ois-fro-suffix-K8aHlfla",
      "tags": [
        "morpheme"
      ]
    },
    {
      "categories": [
        {
          "_dis": "32 16 10 42",
          "kind": "other",
          "name": "Old French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "used to form the first and second-person singular imperfect tense"
      ],
      "id": "en--ois-fro-suffix-THRPTFPP",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0 0",
      "word": "-eis"
    }
  ],
  "word": "-ois"
}

{
  "categories": [
    "Old French entries with incorrect language header",
    "Old French lemmas",
    "Old French suffixes",
    "Old French terms derived from Late Latin",
    "Old French terms derived from Latin",
    "Old French terms derived from Vulgar Latin",
    "Old French terms inherited from Late Latin",
    "Old French terms inherited from Latin",
    "Old French terms inherited from Vulgar Latin"
  ],
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "fr",
            "2": "-ais",
            "3": "-ois"
          },
          "expansion": "French: -ais, -ois",
          "name": "desc"
        }
      ],
      "text": "French: -ais, -ois"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "nrf",
            "2": "-ais",
            "3": "-ouais"
          },
          "expansion": "Norman: -ais, -ouais",
          "name": "desc"
        }
      ],
      "text": "Norman: -ais, -ouais"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fro",
        "2": "LL.",
        "3": "-"
      },
      "expansion": "Late Latin",
      "name": "inh"
    },
    {
      "args": {
        "1": "fro",
        "2": "VL.",
        "3": "-iscus"
      },
      "expansion": "Vulgar Latin -iscus",
      "name": "inh"
    },
    {
      "args": {
        "1": "fro",
        "2": "la",
        "3": "-ēnsis"
      },
      "expansion": "Latin -ēnsis",
      "name": "inh"
    }
  ],
  "etymology_text": "In some senses from Late Latin, Vulgar Latin -iscus, in others from Latin -ēnsis.",
  "head_templates": [
    {
      "args": {
        "1": "fro",
        "2": "suffix"
      },
      "expansion": "-ois",
      "name": "head"
    }
  ],
  "lang": "Old French",
  "lang_code": "fro",
  "pos": "suffix",
  "senses": [
    {
      "glosses": [
        "used to form nationalities"
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "examples": [
        {
          "text": "françois (“French”)"
        },
        {
          "text": "anglois (“English”)"
        }
      ],
      "glosses": [
        "used to form names of languages"
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "glosses": [
        "used to form the first and second-person singular imperfect tense"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "-eis"
    }
  ],
  "word": "-ois"
}