"dad-" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "cel-pro",
        "3": "*do-ate-"
      },
      "expansion": "",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "dy-",
        "3": "ad-"
      },
      "expansion": "dy- + ad-",
      "name": "compound"
    },
    {
      "args": {
        "1": "kw",
        "2": "das-"
      },
      "expansion": "Cornish das-",
      "name": "cog"
    }
  ],
  "etymology_text": "From , equivalent to dy- + ad-. Cognate with Cornish das-.",
  "forms": [
    {
      "form": "no-table-tags",
      "source": "mutation",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "cy-mut",
      "source": "mutation",
      "tags": [
        "inflection-template"
      ]
    },
    {
      "form": "dad-",
      "source": "mutation",
      "tags": [
        "error-unrecognized-form"
      ]
    },
    {
      "form": "ddad-",
      "source": "mutation",
      "tags": [
        "soft"
      ]
    },
    {
      "form": "nad-",
      "source": "mutation",
      "tags": [
        "error-unrecognized-form"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "prefix"
      },
      "expansion": "dad-",
      "name": "head"
    }
  ],
  "inflection_templates": [
    {
      "args": {},
      "name": "cy-mut"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "_dis": "96 4",
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "97 3",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "98 2",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "99 1",
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "dad- + pacio (“to pack”) → dadbacio (“to unpack”)",
          "type": "example"
        },
        {
          "text": "dad- + gwneud (“to do”) → dad-wneud (“to undo”)",
          "type": "example"
        },
        {
          "text": "dad- + llwytho (“to load”) → dadlwytho (“to unload”)",
          "type": "example"
        }
      ],
      "glosses": [
        "undo, un-, dis-"
      ],
      "id": "en-dad--cy-prefix-kFaQ1Qke",
      "links": [
        [
          "undo",
          "undo"
        ],
        [
          "un-",
          "un-"
        ],
        [
          "dis-",
          "dis-"
        ]
      ],
      "synonyms": [
        {
          "word": "dat-"
        }
      ],
      "tags": [
        "error-lua-exec",
        "morpheme"
      ]
    },
    {
      "examples": [
        {
          "text": "dad- + ennill (“to win, to earn”) → dadennill (“to regain”)",
          "type": "example"
        }
      ],
      "glosses": [
        "re-"
      ],
      "id": "en-dad--cy-prefix-3fQno6NV",
      "links": [
        [
          "re-",
          "re-"
        ]
      ],
      "synonyms": [
        {
          "word": "dat-"
        }
      ],
      "tags": [
        "error-lua-exec",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/dad/"
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0",
      "alt": "before b, d, dd, g, s",
      "word": "dat-"
    }
  ],
  "word": "dad-"
}

{
  "categories": [
    "Pages using catfix",
    "Pages with 1 entry",
    "Pages with entries",
    "Welsh compound terms",
    "Welsh entries with incorrect language header",
    "Welsh lemmas",
    "Welsh prefixes"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "cel-pro",
        "3": "*do-ate-"
      },
      "expansion": "",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "dy-",
        "3": "ad-"
      },
      "expansion": "dy- + ad-",
      "name": "compound"
    },
    {
      "args": {
        "1": "kw",
        "2": "das-"
      },
      "expansion": "Cornish das-",
      "name": "cog"
    }
  ],
  "etymology_text": "From , equivalent to dy- + ad-. Cognate with Cornish das-.",
  "forms": [
    {
      "form": "no-table-tags",
      "source": "mutation",
      "tags": [
        "table-tags"
      ]
    },
    {
      "form": "cy-mut",
      "source": "mutation",
      "tags": [
        "inflection-template"
      ]
    },
    {
      "form": "dad-",
      "source": "mutation",
      "tags": [
        "error-unrecognized-form"
      ]
    },
    {
      "form": "ddad-",
      "source": "mutation",
      "tags": [
        "soft"
      ]
    },
    {
      "form": "nad-",
      "source": "mutation",
      "tags": [
        "error-unrecognized-form"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "prefix"
      },
      "expansion": "dad-",
      "name": "head"
    }
  ],
  "inflection_templates": [
    {
      "args": {},
      "name": "cy-mut"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "prefix",
  "senses": [
    {
      "examples": [
        {
          "text": "dad- + pacio (“to pack”) → dadbacio (“to unpack”)",
          "type": "example"
        },
        {
          "text": "dad- + gwneud (“to do”) → dad-wneud (“to undo”)",
          "type": "example"
        },
        {
          "text": "dad- + llwytho (“to load”) → dadlwytho (“to unload”)",
          "type": "example"
        }
      ],
      "glosses": [
        "undo, un-, dis-"
      ],
      "links": [
        [
          "undo",
          "undo"
        ],
        [
          "un-",
          "un-"
        ],
        [
          "dis-",
          "dis-"
        ]
      ],
      "synonyms": [
        {
          "word": "dat-"
        }
      ],
      "tags": [
        "error-lua-exec",
        "morpheme"
      ]
    },
    {
      "examples": [
        {
          "text": "dad- + ennill (“to win, to earn”) → dadennill (“to regain”)",
          "type": "example"
        }
      ],
      "glosses": [
        "re-"
      ],
      "links": [
        [
          "re-",
          "re-"
        ]
      ],
      "synonyms": [
        {
          "word": "dat-"
        }
      ],
      "tags": [
        "error-lua-exec",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/dad/"
    }
  ],
  "synonyms": [
    {
      "alt": "before b, d, dd, g, s",
      "word": "dat-"
    }
  ],
  "word": "dad-"
}

{
  "called_from": "inflection/865",
  "msg": "inflection table: IF WITHOUT ELSE EVALS False: dad-/Welsh 'radical' base_tags=set()",
  "path": [
    "dad-"
  ],
  "section": "Welsh",
  "subsection": "prefix",
  "title": "dad-",
  "trace": ""
}

{
  "called_from": "inflection/865",
  "msg": "inflection table: IF WITHOUT ELSE EVALS False: dad-/Welsh 'nasal' base_tags={'soft', 'error-unrecognized-form'}",
  "path": [
    "dad-"
  ],
  "section": "Welsh",
  "subsection": "prefix",
  "title": "dad-",
  "trace": ""
}

{
  "called_from": "inflection/865",
  "msg": "inflection table: IF WITHOUT ELSE EVALS False: dad-/Welsh 'aspirate' base_tags={'soft', 'error-unrecognized-form'}",
  "path": [
    "dad-"
  ],
  "section": "Welsh",
  "subsection": "prefix",
  "title": "dad-",
  "trace": ""
}

{
  "called_from": "luaexec/683",
  "msg": "LUA error in #invoke('etymology/templates/inherited', 'inherited') parent ('Template:inherited', {1: 'cy', 2: 'cel-pro', 3: '*[[do-]][[ate-]]'})",
  "path": [
    "dad-",
    "Template:inh",
    "#invoke",
    "#invoke"
  ],
  "section": "Welsh",
  "subsection": "",
  "title": "dad-",
  "trace": "[string \"Module:links\"]:223: The specified language Proto-Celtic is unattested, while the given term does not begin with '*' to indicate that it is reconstructed."
}

{
  "called_from": "luaexec/683",
  "msg": "LUA error in #invoke('etymology/templates/inherited', 'inherited') parent ('Template:inherited', {1: 'cy', 2: 'cel-pro', 3: '*[[do-]][[ate-]]'})",
  "path": [
    "dad-",
    "Template:inh",
    "#invoke",
    "#invoke"
  ],
  "section": "Welsh",
  "subsection": "",
  "title": "dad-",
  "trace": "[string \"Module:links\"]:223: The specified language Proto-Celtic is unattested, while the given term does not begin with '*' to indicate that it is reconstructed."
}