"соуи" meaning in Old Church Slavonic

{
  "etymology_templates": [
    {
      "args": {
        "1": "cu",
        "2": "sla-pro",
        "3": "*sujь"
      },
      "expansion": "Proto-Slavic *sujь",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Slavic *sujь.",
  "forms": [
    {
      "form": "sui",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cu",
        "10": "",
        "11": "",
        "12": "",
        "13": "",
        "14": "",
        "15": "",
        "16": "",
        "17": "",
        "18": "",
        "19": "",
        "2": "adjective",
        "20": "",
        "21": "",
        "22": "",
        "3": "",
        "4": "",
        "5": "",
        "6": "",
        "7": "",
        "8": "",
        "9": "",
        "head": "",
        "sc": "",
        "tr": ""
      },
      "expansion": "соуи • (sui)",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "соуи • (sui)",
      "name": "cu-adj"
    }
  ],
  "lang": "Old Church Slavonic",
  "lang_code": "cu",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old Church Slavonic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "roman": "vŭsuje",
          "word": "въсоуе"
        },
        {
          "english": "in vain",
          "roman": "vŭsuje",
          "word": "въсоуѥ"
        },
        {
          "roman": "nasuje",
          "word": "насоуе"
        },
        {
          "roman": "sujeslovo",
          "word": "соуеслово"
        },
        {
          "english": "vanity",
          "roman": "sujeta",
          "word": "соуета"
        },
        {
          "roman": "suje",
          "word": "соуѥ"
        },
        {
          "english": "superstition",
          "roman": "sujevěrĭje",
          "word": "соуѥвѣрьѥ"
        },
        {
          "english": "idle talk",
          "roman": "sujeglasĭje",
          "word": "соуѥгласьѥ"
        },
        {
          "english": "idle claim",
          "roman": "sujeslovĭje",
          "word": "соуѥсловьѥ"
        }
      ],
      "examples": [
        {
          "english": "they do not utter vain words",
          "ref": "from the Homily against the Bogumils, 115",
          "roman": "slovese suja ne rekǫtŭ",
          "text": "словесе соуꙗ не рекѫтъ",
          "type": "quotation"
        }
      ],
      "glosses": [
        "vain, futile"
      ],
      "id": "en-соуи-cu-adj-MvOkheh0",
      "links": [
        [
          "vain",
          "vain"
        ],
        [
          "futile",
          "futile"
        ]
      ]
    }
  ],
  "word": "соуи"
}

{
  "derived": [
    {
      "roman": "vŭsuje",
      "word": "въсоуе"
    },
    {
      "english": "in vain",
      "roman": "vŭsuje",
      "word": "въсоуѥ"
    },
    {
      "roman": "nasuje",
      "word": "насоуе"
    },
    {
      "roman": "sujeslovo",
      "word": "соуеслово"
    },
    {
      "english": "vanity",
      "roman": "sujeta",
      "word": "соуета"
    },
    {
      "roman": "suje",
      "word": "соуѥ"
    },
    {
      "english": "superstition",
      "roman": "sujevěrĭje",
      "word": "соуѥвѣрьѥ"
    },
    {
      "english": "idle talk",
      "roman": "sujeglasĭje",
      "word": "соуѥгласьѥ"
    },
    {
      "english": "idle claim",
      "roman": "sujeslovĭje",
      "word": "соуѥсловьѥ"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "cu",
        "2": "sla-pro",
        "3": "*sujь"
      },
      "expansion": "Proto-Slavic *sujь",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Slavic *sujь.",
  "forms": [
    {
      "form": "sui",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cu",
        "10": "",
        "11": "",
        "12": "",
        "13": "",
        "14": "",
        "15": "",
        "16": "",
        "17": "",
        "18": "",
        "19": "",
        "2": "adjective",
        "20": "",
        "21": "",
        "22": "",
        "3": "",
        "4": "",
        "5": "",
        "6": "",
        "7": "",
        "8": "",
        "9": "",
        "head": "",
        "sc": "",
        "tr": ""
      },
      "expansion": "соуи • (sui)",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "соуи • (sui)",
      "name": "cu-adj"
    }
  ],
  "lang": "Old Church Slavonic",
  "lang_code": "cu",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Old Church Slavonic adjectives",
        "Old Church Slavonic entries with incorrect language header",
        "Old Church Slavonic lemmas",
        "Old Church Slavonic terms derived from Proto-Slavic",
        "Old Church Slavonic terms inherited from Proto-Slavic",
        "Old Church Slavonic terms with quotations"
      ],
      "examples": [
        {
          "english": "they do not utter vain words",
          "ref": "from the Homily against the Bogumils, 115",
          "roman": "slovese suja ne rekǫtŭ",
          "text": "словесе соуꙗ не рекѫтъ",
          "type": "quotation"
        }
      ],
      "glosses": [
        "vain, futile"
      ],
      "links": [
        [
          "vain",
          "vain"
        ],
        [
          "futile",
          "futile"
        ]
      ]
    }
  ],
  "word": "соуи"
}