"-ait'ak" meaning in Proto-Finnic

{
  "descendants": [
    {
      "lang": "Finnish",
      "lang_code": "fi",
      "raw_tags": [
        "stem -aja-",
        "e.g. heläjää",
        "kumajaa"
      ],
      "tags": [
        "dialectal"
      ],
      "word": "-ajaa"
    },
    {
      "lang": "Veps",
      "lang_code": "vep",
      "word": "-aita"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fi",
        "2": "-aista"
      },
      "expansion": "Finnish -aista",
      "name": "m+"
    },
    {
      "args": {
        "1": "rebracketing"
      },
      "expansion": "rebracketing",
      "name": "lg"
    }
  ],
  "etymology_text": "Probably a variant of *-it'ak with rebracketing/re-extraction from a-stems into the suffix. The lack of the standard labialization *-ai- > *-oi- suggests a relatively recent origin or prevention of the sound change by analogy; compare also Finnish -aista, which in some analyses has been treated as the inspiration for *-ait'ak (implying that the former also dates from the Proto-Finnic era).\nHolopainen & Junttila (2022) propose that the entire *-aida- suffix may have originally come about as a result of rebracketing applied to verbs borrowed from Baltic (with metathesis *-ja- > *-ai-) and suffixed with *-ta- (e.g. Baltic *tempja > Finnic *tëmpai-da- > *tëmp-aida-).",
  "forms": [
    {
      "form": "-ait'ak / *-äit'äk",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "-aida- / *-äidä-",
      "tags": [
        "stem"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "urj-fin-pro",
        "2": "suffix",
        "3": "stem",
        "4": "*-aida- / *-äidä-",
        "cat2": "verb-forming suffixes",
        "head": "*-ait'ak / *-äit'äk"
      },
      "expansion": "*-ait'ak / *-äit'äk (stem *-aida- / *-äidä-)",
      "name": "head"
    }
  ],
  "lang": "Proto-Finnic",
  "lang_code": "urj-fin-pro",
  "original_title": "Reconstruction:Proto-Finnic/-ait'ak",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Proto-Finnic entries with incorrect language header",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "heläit'äk"
        },
        {
          "word": "kumait'ak"
        },
        {
          "word": "? *hauk'ait'ak"
        },
        {
          "word": "? *rabait'ak"
        }
      ],
      "glosses": [
        "Forms verbs, often continuative or frequentative, mainly from nominal stems."
      ],
      "id": "en--ait'ak-urj-fin-pro-suffix-HKLGveSN",
      "tags": [
        "morpheme",
        "reconstruction"
      ]
    }
  ],
  "word": "-ait'ak"
}

{
  "derived": [
    {
      "word": "heläit'äk"
    },
    {
      "word": "kumait'ak"
    },
    {
      "word": "? *hauk'ait'ak"
    },
    {
      "word": "? *rabait'ak"
    }
  ],
  "descendants": [
    {
      "lang": "Finnish",
      "lang_code": "fi",
      "raw_tags": [
        "stem -aja-",
        "e.g. heläjää",
        "kumajaa"
      ],
      "tags": [
        "dialectal"
      ],
      "word": "-ajaa"
    },
    {
      "lang": "Veps",
      "lang_code": "vep",
      "word": "-aita"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fi",
        "2": "-aista"
      },
      "expansion": "Finnish -aista",
      "name": "m+"
    },
    {
      "args": {
        "1": "rebracketing"
      },
      "expansion": "rebracketing",
      "name": "lg"
    }
  ],
  "etymology_text": "Probably a variant of *-it'ak with rebracketing/re-extraction from a-stems into the suffix. The lack of the standard labialization *-ai- > *-oi- suggests a relatively recent origin or prevention of the sound change by analogy; compare also Finnish -aista, which in some analyses has been treated as the inspiration for *-ait'ak (implying that the former also dates from the Proto-Finnic era).\nHolopainen & Junttila (2022) propose that the entire *-aida- suffix may have originally come about as a result of rebracketing applied to verbs borrowed from Baltic (with metathesis *-ja- > *-ai-) and suffixed with *-ta- (e.g. Baltic *tempja > Finnic *tëmpai-da- > *tëmp-aida-).",
  "forms": [
    {
      "form": "-ait'ak / *-äit'äk",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "-aida- / *-äidä-",
      "tags": [
        "stem"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "urj-fin-pro",
        "2": "suffix",
        "3": "stem",
        "4": "*-aida- / *-äidä-",
        "cat2": "verb-forming suffixes",
        "head": "*-ait'ak / *-äit'äk"
      },
      "expansion": "*-ait'ak / *-äit'äk (stem *-aida- / *-äidä-)",
      "name": "head"
    }
  ],
  "lang": "Proto-Finnic",
  "lang_code": "urj-fin-pro",
  "original_title": "Reconstruction:Proto-Finnic/-ait'ak",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Pages using catfix",
        "Pages with 1 entry",
        "Pages with entries",
        "Proto-Finnic entries with incorrect language header",
        "Proto-Finnic lemmas",
        "Proto-Finnic suffixes",
        "Proto-Finnic verb-forming suffixes"
      ],
      "glosses": [
        "Forms verbs, often continuative or frequentative, mainly from nominal stems."
      ],
      "tags": [
        "morpheme",
        "reconstruction"
      ]
    }
  ],
  "word": "-ait'ak"
}