"hyväin" meaning in Finnois

{
  "categories": [
    {
      "kind": "other",
      "name": "Formes d’adjectifs en finnois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Finnois",
      "orig": "finnois",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Finnois",
  "lang_code": "fi",
  "pos": "adj",
  "pos_title": "Forme d’adjectif",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Termes rares en finnois",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "hyvä"
        }
      ],
      "glosses": [
        "Génitif pluriel de hyvä."
      ],
      "id": "fr-hyväin-fi-adj-KLfEwb2a",
      "tags": [
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈhyvæin\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "hyväin"
}

{
  "categories": [
    "Formes d’adjectifs en finnois",
    "finnois"
  ],
  "lang": "Finnois",
  "lang_code": "fi",
  "pos": "adj",
  "pos_title": "Forme d’adjectif",
  "senses": [
    {
      "categories": [
        "Termes rares en finnois"
      ],
      "form_of": [
        {
          "word": "hyvä"
        }
      ],
      "glosses": [
        "Génitif pluriel de hyvä."
      ],
      "tags": [
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈhyvæin\\"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "hyväin"
}