"εἶθαρ" meaning in Ancient Greek

{
  "etymology_templates": [
    {
      "args": {
        "1": "grc",
        "2": "ine-pro",
        "3": "",
        "4": "*Hyéwdʰ-r̥"
      },
      "expansion": "Proto-Indo-European *Hyéwdʰ-r̥",
      "name": "inh"
    },
    {
      "args": {
        "1": "la",
        "2": "iubar",
        "t": "dawning light"
      },
      "expansion": "Latin iubar (“dawning light”)",
      "name": "cog"
    }
  ],
  "etymology_text": "Traditionally derived from *εὖθαρ (*eûthar), compare εὐθύς (euthús) ~ *εἰθύς (*eithús) ~ ἰθῠ́ς (ithŭ́s, “straight”), from Proto-Indo-European *Hyéwdʰ-r̥ from the root *Hyewdʰ-. Maybe directly cognate to Latin iubar (“dawning light”).\nBeekes is skeptical, and leaves the origin open.",
  "forms": [
    {
      "form": "εἶθᾰρ",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "eîthăr",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "εἶθᾰρ"
      },
      "expansion": "εἶθᾰρ • (eîthăr)",
      "name": "grc-adverb"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Ancient Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "at once, immediately, forthwith"
      ],
      "id": "en-εἶθαρ-grc-adv-~oHJax7S",
      "links": [
        [
          "at once",
          "at once"
        ],
        [
          "immediately",
          "immediately"
        ],
        [
          "forthwith",
          "forthwith"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/êː.tʰar/"
    },
    {
      "ipa": "/ˈi.θar/"
    },
    {
      "ipa": "/ˈi.θar/"
    },
    {
      "ipa": "/êː.tʰar/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/ˈi.tʰar/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/ˈi.θar/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/ˈi.θar/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/ˈi.θar/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "word": "εἶθαρ"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "grc",
        "2": "ine-pro",
        "3": "",
        "4": "*Hyéwdʰ-r̥"
      },
      "expansion": "Proto-Indo-European *Hyéwdʰ-r̥",
      "name": "inh"
    },
    {
      "args": {
        "1": "la",
        "2": "iubar",
        "t": "dawning light"
      },
      "expansion": "Latin iubar (“dawning light”)",
      "name": "cog"
    }
  ],
  "etymology_text": "Traditionally derived from *εὖθαρ (*eûthar), compare εὐθύς (euthús) ~ *εἰθύς (*eithús) ~ ἰθῠ́ς (ithŭ́s, “straight”), from Proto-Indo-European *Hyéwdʰ-r̥ from the root *Hyewdʰ-. Maybe directly cognate to Latin iubar (“dawning light”).\nBeekes is skeptical, and leaves the origin open.",
  "forms": [
    {
      "form": "εἶθᾰρ",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "eîthăr",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "εἶθᾰρ"
      },
      "expansion": "εἶθᾰρ • (eîthăr)",
      "name": "grc-adverb"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Ancient Greek 2-syllable words",
        "Ancient Greek adverbs",
        "Ancient Greek entries with incorrect language header",
        "Ancient Greek lemmas",
        "Ancient Greek properispomenon terms",
        "Ancient Greek terms derived from Proto-Indo-European",
        "Ancient Greek terms inherited from Proto-Indo-European",
        "Ancient Greek terms with IPA pronunciation",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "at once, immediately, forthwith"
      ],
      "links": [
        [
          "at once",
          "at once"
        ],
        [
          "immediately",
          "immediately"
        ],
        [
          "forthwith",
          "forthwith"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/êː.tʰar/"
    },
    {
      "ipa": "/ˈi.θar/"
    },
    {
      "ipa": "/ˈi.θar/"
    },
    {
      "ipa": "/êː.tʰar/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/ˈi.tʰar/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/ˈi.θar/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/ˈi.θar/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/ˈi.θar/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "word": "εἶθαρ"
}