"-au" meaning in Welsh

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "wlm",
        "3": "-eu"
      },
      "expansion": "Middle Welsh -eu",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "owl",
        "3": "-ou"
      },
      "expansion": "Old Welsh -ou",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-bry-pro",
        "3": "*-ow"
      },
      "expansion": "Proto-Brythonic *-ow",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-pro",
        "3": "*-owes"
      },
      "expansion": "Proto-Celtic *-owes",
      "name": "inh"
    },
    {
      "args": {
        "1": "kw",
        "2": "-ow"
      },
      "expansion": "Cornish -ow",
      "name": "cog"
    },
    {
      "args": {
        "1": "br",
        "2": "-où"
      },
      "expansion": "Breton -où",
      "name": "cog"
    }
  ],
  "etymology_text": "From Middle Welsh -eu, from Old Welsh -ou, from Proto-Brythonic *-ow, from Proto-Celtic *-owes, u-stem nominative plural. Cognate with Cornish -ow and Breton -où.",
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "suffix form"
      },
      "expansion": "-au",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "_dis": "70 30",
          "kind": "other",
          "name": "Pages with raw sortkeys",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "69 31",
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "69 31",
          "kind": "other",
          "name": "Welsh entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "68 32",
          "kind": "other",
          "name": "Welsh heteronyms",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "66 34",
          "kind": "other",
          "name": "Welsh terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "syniad (“idea”) + -au → syniadau (“ideas”)",
          "type": "example"
        },
        {
          "text": "methiant (“failure”) + -au → methiannau (“failures”)",
          "type": "example"
        },
        {
          "text": "gwasanaeth (“service”) + -au → gwasanaethau (“services”)",
          "type": "example"
        }
      ],
      "glosses": [
        "Forms plural nouns., -s"
      ],
      "id": "en--au-cy-suffix-rFZ4Tkul",
      "links": [
        [
          "-s",
          "-s"
        ]
      ],
      "synonyms": [
        {
          "word": "-aid"
        },
        {
          "word": "-aint"
        },
        {
          "word": "-ed"
        },
        {
          "word": "-edd"
        },
        {
          "word": "-en"
        },
        {
          "word": "-i"
        },
        {
          "word": "-iadau"
        },
        {
          "word": "-iaid"
        },
        {
          "word": "-iau"
        },
        {
          "word": "-ion"
        },
        {
          "word": "-od"
        },
        {
          "word": "-oedd"
        },
        {
          "word": "-on"
        },
        {
          "word": "-ydd"
        },
        {
          "word": "-yr"
        },
        {
          "word": "-ys"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/aɨ̯/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ɛ/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/a/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ai̯/",
      "tags": [
        "South-Wales"
      ]
    },
    {
      "ipa": "/ɛ/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "-au"
}

{
  "etymology_number": 2,
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "suffix form"
      },
      "expansion": "-au",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "suffix",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "forms verbal nouns",
          "word": "-hau"
        }
      ],
      "glosses": [
        "Alternative form of -hau (forms verbal nouns)"
      ],
      "id": "en--au-cy-suffix-9jq6mrsl",
      "links": [
        [
          "-hau",
          "-hau#Welsh"
        ]
      ],
      "synonyms": [
        {
          "english": "when there is confusion with an identically-spelled plural",
          "word": "-áu"
        }
      ],
      "tags": [
        "alt-of",
        "alternative",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈaɨ̯/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈai̯/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "-au"
}

{
  "categories": [
    "Pages with raw sortkeys",
    "Welsh entries with incorrect language header",
    "Welsh entries with language name categories using raw markup",
    "Welsh heteronyms",
    "Welsh non-lemma forms",
    "Welsh plural suffixes",
    "Welsh suffix forms",
    "Welsh suffixes",
    "Welsh terms derived from Middle Welsh",
    "Welsh terms derived from Old Welsh",
    "Welsh terms derived from Proto-Brythonic",
    "Welsh terms derived from Proto-Celtic",
    "Welsh terms inherited from Middle Welsh",
    "Welsh terms inherited from Old Welsh",
    "Welsh terms inherited from Proto-Brythonic",
    "Welsh terms inherited from Proto-Celtic",
    "Welsh terms with IPA pronunciation",
    "Welsh terms with redundant sortkeys"
  ],
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "wlm",
        "3": "-eu"
      },
      "expansion": "Middle Welsh -eu",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "owl",
        "3": "-ou"
      },
      "expansion": "Old Welsh -ou",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-bry-pro",
        "3": "*-ow"
      },
      "expansion": "Proto-Brythonic *-ow",
      "name": "inh"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-pro",
        "3": "*-owes"
      },
      "expansion": "Proto-Celtic *-owes",
      "name": "inh"
    },
    {
      "args": {
        "1": "kw",
        "2": "-ow"
      },
      "expansion": "Cornish -ow",
      "name": "cog"
    },
    {
      "args": {
        "1": "br",
        "2": "-où"
      },
      "expansion": "Breton -où",
      "name": "cog"
    }
  ],
  "etymology_text": "From Middle Welsh -eu, from Old Welsh -ou, from Proto-Brythonic *-ow, from Proto-Celtic *-owes, u-stem nominative plural. Cognate with Cornish -ow and Breton -où.",
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "suffix form"
      },
      "expansion": "-au",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "suffix",
  "senses": [
    {
      "examples": [
        {
          "text": "syniad (“idea”) + -au → syniadau (“ideas”)",
          "type": "example"
        },
        {
          "text": "methiant (“failure”) + -au → methiannau (“failures”)",
          "type": "example"
        },
        {
          "text": "gwasanaeth (“service”) + -au → gwasanaethau (“services”)",
          "type": "example"
        }
      ],
      "glosses": [
        "Forms plural nouns., -s"
      ],
      "links": [
        [
          "-s",
          "-s"
        ]
      ],
      "synonyms": [
        {
          "word": "-aid"
        },
        {
          "word": "-aint"
        },
        {
          "word": "-ed"
        },
        {
          "word": "-edd"
        },
        {
          "word": "-en"
        },
        {
          "word": "-i"
        },
        {
          "word": "-iadau"
        },
        {
          "word": "-iaid"
        },
        {
          "word": "-iau"
        },
        {
          "word": "-ion"
        },
        {
          "word": "-od"
        },
        {
          "word": "-oedd"
        },
        {
          "word": "-on"
        },
        {
          "word": "-ydd"
        },
        {
          "word": "-yr"
        },
        {
          "word": "-ys"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/aɨ̯/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ɛ/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/a/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ai̯/",
      "tags": [
        "South-Wales"
      ]
    },
    {
      "ipa": "/ɛ/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "-iau"
    }
  ],
  "word": "-au"
}

{
  "categories": [
    "Pages with raw sortkeys",
    "Welsh entries with incorrect language header",
    "Welsh entries with language name categories using raw markup",
    "Welsh heteronyms",
    "Welsh non-lemma forms",
    "Welsh plural suffixes",
    "Welsh suffix forms",
    "Welsh suffixes",
    "Welsh terms with IPA pronunciation",
    "Welsh terms with redundant sortkeys"
  ],
  "etymology_number": 2,
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "suffix form"
      },
      "expansion": "-au",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "suffix",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "forms verbal nouns",
          "word": "-hau"
        }
      ],
      "glosses": [
        "Alternative form of -hau (forms verbal nouns)"
      ],
      "links": [
        [
          "-hau",
          "-hau#Welsh"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈaɨ̯/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈai̯/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "synonyms": [
    {
      "english": "when there is confusion with an identically-spelled plural",
      "word": "-áu"
    }
  ],
  "word": "-au"
}