"-ai" meaning in Italian

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "la",
        "3": "it",
        "4": "-āvī"
      },
      "expansion": "Latin -āvī",
      "name": "inh"
    }
  ],
  "etymology_text": "From Latin -āvī, via -āī.\nExample: Italian lodai, from Latin laudāvī.",
  "hyphenation": [
    "-ài"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "_dis": "60 40",
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "used with a stem to form the first-person singular past historic of -are verbs"
      ],
      "id": "en--ai-it-suffix-CEGXqF9e",
      "links": [
        [
          "first-person singular",
          "first-person singular#English"
        ],
        [
          "past historic",
          "past historic#English"
        ],
        [
          "-are",
          "-are#Italian"
        ]
      ],
      "related": [
        {
          "word": "-erai"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈaj/"
    },
    {
      "rhymes": "-aj"
    }
  ],
  "word": "-ai"
}

{
  "etymology_number": 2,
  "hyphenation": [
    "-à‧i"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "suffix",
  "senses": [
    {
      "form_of": [
        {
          "word": "-aio"
        }
      ],
      "glosses": [
        "masculine plural of -aio"
      ],
      "id": "en--ai-it-suffix-RnkqVIUC",
      "links": [
        [
          "-aio",
          "-aio#Italian"
        ]
      ],
      "tags": [
        "form-of",
        "masculine",
        "morpheme",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈa.i/"
    },
    {
      "rhymes": "-ai"
    }
  ],
  "word": "-ai"
}

{
  "categories": [
    "Italian 1-syllable words",
    "Italian 2-syllable words",
    "Italian entries with incorrect language header",
    "Italian non-lemma forms",
    "Italian suffix forms",
    "Italian terms derived from Latin",
    "Italian terms inherited from Latin",
    "Italian terms with IPA pronunciation",
    "Pages using catfix",
    "Pages with 6 entries",
    "Pages with entries",
    "Rhymes:Italian/ai",
    "Rhymes:Italian/ai/2 syllables",
    "Rhymes:Italian/aj",
    "Rhymes:Italian/aj/1 syllable"
  ],
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "la",
        "3": "it",
        "4": "-āvī"
      },
      "expansion": "Latin -āvī",
      "name": "inh"
    }
  ],
  "etymology_text": "From Latin -āvī, via -āī.\nExample: Italian lodai, from Latin laudāvī.",
  "hyphenation": [
    "-ài"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "suffix",
  "related": [
    {
      "word": "-erai"
    }
  ],
  "senses": [
    {
      "glosses": [
        "used with a stem to form the first-person singular past historic of -are verbs"
      ],
      "links": [
        [
          "first-person singular",
          "first-person singular#English"
        ],
        [
          "past historic",
          "past historic#English"
        ],
        [
          "-are",
          "-are#Italian"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈaj/"
    },
    {
      "rhymes": "-aj"
    }
  ],
  "word": "-ai"
}

{
  "categories": [
    "Italian 2-syllable words",
    "Italian entries with incorrect language header",
    "Italian non-lemma forms",
    "Italian suffix forms",
    "Italian terms with IPA pronunciation",
    "Pages using catfix",
    "Pages with 6 entries",
    "Pages with entries",
    "Rhymes:Italian/ai",
    "Rhymes:Italian/ai/2 syllables"
  ],
  "etymology_number": 2,
  "hyphenation": [
    "-à‧i"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "suffix",
  "senses": [
    {
      "form_of": [
        {
          "word": "-aio"
        }
      ],
      "glosses": [
        "masculine plural of -aio"
      ],
      "links": [
        [
          "-aio",
          "-aio#Italian"
        ]
      ],
      "tags": [
        "form-of",
        "masculine",
        "morpheme",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈa.i/"
    },
    {
      "rhymes": "-ai"
    }
  ],
  "word": "-ai"
}

{
  "called_from": "form_descriptions/1698",
  "msg": "unrecognized head form: non-lemma form of verb-forming suffix",
  "path": [
    "-ai"
  ],
  "section": "Italian",
  "subsection": "suffix",
  "title": "-ai",
  "trace": ""
}

{
  "called_from": "form_descriptions/1698",
  "msg": "unrecognized head form: non-lemma form of noun-forming suffix or adjective-forming suffix",
  "path": [
    "-ai"
  ],
  "section": "Italian",
  "subsection": "suffix",
  "title": "-ai",
  "trace": ""
}