"-ad" meaning in Old Irish

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "ga",
            "2": "-adh"
          },
          "expansion": "Irish: -adh",
          "name": "desc"
        }
      ],
      "text": "Irish: -adh"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gv",
            "2": "-ey"
          },
          "expansion": "Manx: -ey",
          "name": "desc"
        }
      ],
      "text": "Manx: -ey"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gd",
            "2": "-adh"
          },
          "expansion": "Scottish Gaelic: -adh",
          "name": "desc"
        }
      ],
      "text": "Scottish Gaelic: -adh"
    }
  ],
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "sga",
        "2": "cel-pro",
        "3": "*-tus"
      },
      "expansion": "Proto-Celtic *-tus",
      "name": "der"
    }
  ],
  "etymology_text": "From the various thematic vowels of verb stems plus Proto-Celtic *-tus, i.e. from *-atus, *-ātus, *-etus, and *-ītus.",
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "suffix",
        "cat2": "noun-forming suffixes"
      },
      "expansion": "-ad",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "_dis": "0 7 1 4 5 7 21 2 10 2 4 1 5 2 1 11 12 4",
          "kind": "other",
          "name": "Pages with 9 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "45 7 24 7 11 6",
          "kind": "other",
          "name": "Old Irish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "suffix forming verbal nouns"
      ],
      "id": "en--ad-sga-suffix-17f7R~O2",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/að/"
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0 0 0 0 0",
      "english": "slender form",
      "word": "-ed"
    },
    {
      "_dis1": "0 0 0 0 0 0",
      "raw_tags": [
        "with A II verbs"
      ],
      "tags": [
        "often"
      ],
      "word": "-ud"
    }
  ],
  "word": "-ad"
}

{
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "sga",
        "2": "cel-pro",
        "3": "*-to"
      },
      "expansion": "Proto-Celtic *-to",
      "name": "der"
    }
  ],
  "etymology_text": "From the various thematic vowels of verb stems plus Proto-Celtic *-to, i.e. from *-ato, *-āto, *-eto, and *-īto.",
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "suffix",
        "cat2": "inflectional suffixes"
      },
      "expansion": "-ad",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "suffix",
  "senses": [
    {
      "glosses": [
        "suffix forming the third-person singular imperative form"
      ],
      "id": "en--ad-sga-suffix-jmfcrfeo",
      "tags": [
        "morpheme"
      ]
    },
    {
      "glosses": [
        "suffix forming the third-person singular imperfect indicative form"
      ],
      "id": "en--ad-sga-suffix-KhNb7sZY",
      "tags": [
        "morpheme"
      ]
    },
    {
      "glosses": [
        "suffix forming the third-person singular past subjunctive form"
      ],
      "id": "en--ad-sga-suffix-u5joIosR",
      "tags": [
        "morpheme"
      ]
    },
    {
      "glosses": [
        "suffix forming the third-person singular conditional form of reduplicated and ē-future stems"
      ],
      "id": "en--ad-sga-suffix-TswY1Qja",
      "tags": [
        "morpheme"
      ]
    },
    {
      "glosses": [
        "suffix forming the singular passive conjunct preterite form of s-preterite stems"
      ],
      "id": "en--ad-sga-suffix-tpUjW9ML",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/að/"
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0 0 0 0 0",
      "english": "slender form",
      "word": "-ed"
    },
    {
      "_dis1": "0 0 0 0 0 0",
      "raw_tags": [
        "with A II verbs"
      ],
      "tags": [
        "often"
      ],
      "word": "-ud"
    }
  ],
  "word": "-ad"
}

{
  "categories": [
    "Old Irish entries with incorrect language header",
    "Old Irish inflectional suffixes",
    "Old Irish lemmas",
    "Old Irish noun-forming suffixes",
    "Old Irish suffixes",
    "Old Irish terms derived from Proto-Celtic",
    "Pages with 9 entries"
  ],
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "ga",
            "2": "-adh"
          },
          "expansion": "Irish: -adh",
          "name": "desc"
        }
      ],
      "text": "Irish: -adh"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gv",
            "2": "-ey"
          },
          "expansion": "Manx: -ey",
          "name": "desc"
        }
      ],
      "text": "Manx: -ey"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gd",
            "2": "-adh"
          },
          "expansion": "Scottish Gaelic: -adh",
          "name": "desc"
        }
      ],
      "text": "Scottish Gaelic: -adh"
    }
  ],
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "sga",
        "2": "cel-pro",
        "3": "*-tus"
      },
      "expansion": "Proto-Celtic *-tus",
      "name": "der"
    }
  ],
  "etymology_text": "From the various thematic vowels of verb stems plus Proto-Celtic *-tus, i.e. from *-atus, *-ātus, *-etus, and *-ītus.",
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "suffix",
        "cat2": "noun-forming suffixes"
      },
      "expansion": "-ad",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "suffix",
  "senses": [
    {
      "glosses": [
        "suffix forming verbal nouns"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/að/"
    }
  ],
  "synonyms": [
    {
      "english": "slender form",
      "word": "-ed"
    },
    {
      "raw_tags": [
        "with A II verbs"
      ],
      "tags": [
        "often"
      ],
      "word": "-ud"
    }
  ],
  "word": "-ad"
}

{
  "categories": [
    "Old Irish entries with incorrect language header",
    "Old Irish inflectional suffixes",
    "Old Irish lemmas",
    "Old Irish suffixes",
    "Old Irish terms derived from Proto-Celtic",
    "Pages with 9 entries"
  ],
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "sga",
        "2": "cel-pro",
        "3": "*-to"
      },
      "expansion": "Proto-Celtic *-to",
      "name": "der"
    }
  ],
  "etymology_text": "From the various thematic vowels of verb stems plus Proto-Celtic *-to, i.e. from *-ato, *-āto, *-eto, and *-īto.",
  "head_templates": [
    {
      "args": {
        "1": "sga",
        "2": "suffix",
        "cat2": "inflectional suffixes"
      },
      "expansion": "-ad",
      "name": "head"
    }
  ],
  "lang": "Old Irish",
  "lang_code": "sga",
  "pos": "suffix",
  "senses": [
    {
      "glosses": [
        "suffix forming the third-person singular imperative form"
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "glosses": [
        "suffix forming the third-person singular imperfect indicative form"
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "glosses": [
        "suffix forming the third-person singular past subjunctive form"
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "glosses": [
        "suffix forming the third-person singular conditional form of reduplicated and ē-future stems"
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "glosses": [
        "suffix forming the singular passive conjunct preterite form of s-preterite stems"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/að/"
    }
  ],
  "synonyms": [
    {
      "english": "slender form",
      "word": "-ed"
    },
    {
      "raw_tags": [
        "with A II verbs"
      ],
      "tags": [
        "often"
      ],
      "word": "-ud"
    }
  ],
  "word": "-ad"
}