"-yd" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "wlm",
        "3": "-yt"
      },
      "expansion": "Middle Welsh -yt",
      "name": "der"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-bry-pro",
        "3": "*-öd"
      },
      "expansion": "Proto-Brythonic *-öd",
      "name": "der"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-pro",
        "3": "*-o-tūts"
      },
      "expansion": "Proto-Celtic *-o-tūts",
      "name": "der"
    },
    {
      "args": {
        "1": "<span class=\"cited-source\">Morris Jones, John (<span class=\"None\" lang=\"und\">1913), <cite>A Welsh Grammar, Historical and Comparative</cite>, Oxford: Clarendon Press, § 143 iii (24), page 232</span></span>"
      },
      "expansion": "",
      "name": "ref"
    }
  ],
  "etymology_text": "From Middle Welsh -yt, from Proto-Brythonic *-öd, from Proto-Celtic *-o-tūts.",
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "suffix"
      },
      "expansion": "-yd",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "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": "Welsh entries with incorrect language header",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "iach (“healthy”) + -yd → iechyd (“health”)",
          "type": "example"
        },
        {
          "text": "claf (“sick, ill”) + -yd → clefyd (“disease”)",
          "type": "example"
        },
        {
          "text": "mab (“son”) + -yd → mebyd (“childhood, infancy”)",
          "type": "example"
        }
      ],
      "glosses": [
        "forming abstract nouns, -ness, -ment"
      ],
      "id": "en--yd-cy-suffix-VWCkaLLb",
      "links": [
        [
          "-ness",
          "-ness"
        ],
        [
          "-ment",
          "-ment"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɨ̞d/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ɪd/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "-yd"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "wlm",
        "3": "-yt"
      },
      "expansion": "Middle Welsh -yt",
      "name": "der"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-bry-pro",
        "3": "*-öd"
      },
      "expansion": "Proto-Brythonic *-öd",
      "name": "der"
    },
    {
      "args": {
        "1": "cy",
        "2": "cel-pro",
        "3": "*-o-tūts"
      },
      "expansion": "Proto-Celtic *-o-tūts",
      "name": "der"
    },
    {
      "args": {
        "1": "<span class=\"cited-source\">Morris Jones, John (<span class=\"None\" lang=\"und\">1913), <cite>A Welsh Grammar, Historical and Comparative</cite>, Oxford: Clarendon Press, § 143 iii (24), page 232</span></span>"
      },
      "expansion": "",
      "name": "ref"
    }
  ],
  "etymology_text": "From Middle Welsh -yt, from Proto-Brythonic *-öd, from Proto-Celtic *-o-tūts.",
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "suffix"
      },
      "expansion": "-yd",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Pages using catfix",
        "Pages with 1 entry",
        "Pages with entries",
        "Welsh entries with incorrect language header",
        "Welsh lemmas",
        "Welsh suffixes",
        "Welsh terms derived from Middle Welsh",
        "Welsh terms derived from Proto-Brythonic",
        "Welsh terms derived from Proto-Celtic"
      ],
      "examples": [
        {
          "text": "iach (“healthy”) + -yd → iechyd (“health”)",
          "type": "example"
        },
        {
          "text": "claf (“sick, ill”) + -yd → clefyd (“disease”)",
          "type": "example"
        },
        {
          "text": "mab (“son”) + -yd → mebyd (“childhood, infancy”)",
          "type": "example"
        }
      ],
      "glosses": [
        "forming abstract nouns, -ness, -ment"
      ],
      "links": [
        [
          "-ness",
          "-ness"
        ],
        [
          "-ment",
          "-ment"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɨ̞d/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ɪd/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "-yd"
}