"-ιστί" meaning in Ancient Greek

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "el",
            "2": "-ιστί"
          },
          "expansion": "Greek: -ιστί (-istí)",
          "name": "desc"
        }
      ],
      "text": "Greek: -ιστί (-istí)"
    }
  ],
  "etymology_text": "Adverbial form derived from -ίζω (-ízō)",
  "forms": [
    {
      "form": "-istí",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "-ιστί • (-istí)",
      "name": "grc-adverb"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "suffix",
  "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": "Ancient Greek terms with redundant script codes",
          "parents": [
            "Terms with redundant script codes",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Ἀττικός (Attikós) + -ιστί (-istí) → ἀττικιστί (attikistí, “in the Attic dialect”)",
          "type": "example"
        },
        {
          "text": "Δωριεύς (Dōrieús) + -ιστί (-istí) → δωριστί (dōristí, “in the Doric dialect”)",
          "type": "example"
        },
        {
          "text": "Λατῖνος (Latînos) + -ιστί (-istí) → λατῑνιστί (latīnistí, “in the Latin language, in Latin”)",
          "type": "example"
        },
        {
          "text": "Πέρσης (Pérsēs) + -ιστί (-istí) → περσιστί (persistí, “in the Persian language, in Persian”)",
          "type": "example"
        }
      ],
      "glosses": [
        "Appended to names of peoples to denote to speak in their language or dialect"
      ],
      "id": "en--ιστί-grc-suffix-y5B-5B8S",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/is.tí/"
    },
    {
      "ipa": "/isˈti/"
    },
    {
      "ipa": "/isˈti/"
    },
    {
      "ipa": "/is.tí/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/isˈti/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/isˈti/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/isˈti/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/isˈti/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "word": "-ιστί"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "el",
            "2": "-ιστί"
          },
          "expansion": "Greek: -ιστί (-istí)",
          "name": "desc"
        }
      ],
      "text": "Greek: -ιστί (-istí)"
    }
  ],
  "etymology_text": "Adverbial form derived from -ίζω (-ízō)",
  "forms": [
    {
      "form": "-istí",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "-ιστί • (-istí)",
      "name": "grc-adverb"
    }
  ],
  "lang": "Ancient Greek",
  "lang_code": "grc",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Ancient Greek 2-syllable words",
        "Ancient Greek adverb-forming suffixes",
        "Ancient Greek entries with incorrect language header",
        "Ancient Greek lemmas",
        "Ancient Greek oxytone terms",
        "Ancient Greek suffixes",
        "Ancient Greek terms with IPA pronunciation",
        "Ancient Greek terms with redundant script codes"
      ],
      "examples": [
        {
          "text": "Ἀττικός (Attikós) + -ιστί (-istí) → ἀττικιστί (attikistí, “in the Attic dialect”)",
          "type": "example"
        },
        {
          "text": "Δωριεύς (Dōrieús) + -ιστί (-istí) → δωριστί (dōristí, “in the Doric dialect”)",
          "type": "example"
        },
        {
          "text": "Λατῖνος (Latînos) + -ιστί (-istí) → λατῑνιστί (latīnistí, “in the Latin language, in Latin”)",
          "type": "example"
        },
        {
          "text": "Πέρσης (Pérsēs) + -ιστί (-istí) → περσιστί (persistí, “in the Persian language, in Persian”)",
          "type": "example"
        }
      ],
      "glosses": [
        "Appended to names of peoples to denote to speak in their language or dialect"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/is.tí/"
    },
    {
      "ipa": "/isˈti/"
    },
    {
      "ipa": "/isˈti/"
    },
    {
      "ipa": "/is.tí/",
      "note": "5ᵗʰ BCE Attic"
    },
    {
      "ipa": "/isˈti/",
      "note": "1ˢᵗ CE Egyptian"
    },
    {
      "ipa": "/isˈti/",
      "note": "4ᵗʰ CE Koine"
    },
    {
      "ipa": "/isˈti/",
      "note": "10ᵗʰ CE Byzantine"
    },
    {
      "ipa": "/isˈti/",
      "note": "15ᵗʰ CE Constantinopolitan"
    }
  ],
  "word": "-ιστί"
}