"ἰθύς" meaning in Grec ancien

{
  "categories": [
    {
      "kind": "other",
      "name": "Adjectifs en grec ancien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Grec ancien",
      "orig": "grec ancien",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "ἰθύφαλλος"
    }
  ],
  "lang": "Grec ancien",
  "lang_code": "grc",
  "pos": "adj",
  "pos_title": "Adjectif",
  "raw_tags": [
    "ἰθύς, ithús"
  ],
  "senses": [
    {
      "alt_of": [
        {
          "word": "εὐθύς"
        }
      ],
      "examples": [
        {
          "text": "ἰθείῃ τέχνῃ, de façon directe."
        }
      ],
      "glosses": [
        "Variante de εὐθύς."
      ],
      "id": "fr-ἰθύς-grc-adj-bhE4UVl7",
      "raw_tags": [
        "Grec ionien"
      ],
      "tags": [
        "alt-of"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "ἰθύς"
}

{
  "categories": [
    "Adjectifs en grec ancien",
    "grec ancien"
  ],
  "derived": [
    {
      "word": "ἰθύφαλλος"
    }
  ],
  "lang": "Grec ancien",
  "lang_code": "grc",
  "pos": "adj",
  "pos_title": "Adjectif",
  "raw_tags": [
    "ἰθύς, ithús"
  ],
  "senses": [
    {
      "alt_of": [
        {
          "word": "εὐθύς"
        }
      ],
      "examples": [
        {
          "text": "ἰθείῃ τέχνῃ, de façon directe."
        }
      ],
      "glosses": [
        "Variante de εὐθύς."
      ],
      "raw_tags": [
        "Grec ionien"
      ],
      "tags": [
        "alt-of"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "ἰθύς"
}