"y-" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "gmw-pro",
        "3": "gem-pro",
        "4": "ine-pro",
        "5": "<"
      },
      "expansion": "",
      "name": "dercat"
    },
    {
      "args": {
        "1": "en",
        "2": "enm",
        "3": "y-"
      },
      "expansion": "Middle English y-",
      "name": "inh"
    },
    {
      "args": {
        "1": "en",
        "2": "ang",
        "3": "ġe-",
        "pos": "perfective and associative prefix"
      },
      "expansion": "Old English ġe- (perfective and associative prefix)",
      "name": "inh"
    },
    {
      "args": {
        "1": "de",
        "2": "ge-"
      },
      "expansion": "German ge-",
      "name": "cog"
    },
    {
      "args": {
        "1": "yi",
        "2": "גע־"
      },
      "expansion": "Yiddish גע־ (ge-)",
      "name": "cog"
    }
  ],
  "etymology_text": "From Middle English y-, from Old English ġe- (perfective and associative prefix); see those entries for more. Cognate with German ge-, Yiddish גע־ (ge-).",
  "forms": [
    {
      "form": "a-",
      "tags": [
        "alternative"
      ]
    }
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        "2": "prefix"
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      "expansion": "y-",
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  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
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      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
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          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w"
        },
        {
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          "name": "Pages with entries",
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          "_dis": "10 12 6 3 1 6 1 14 1 1 2 2 6 5 7 8 1 1 6 6 2",
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "ybarred, yclept, yclad, ybaptized, yslain, yronne"
        }
      ],
      "glosses": [
        "Used with past participle conjugations to form past participles (this prefix does not occur independently and is no longer productive)."
      ],
      "id": "en-y--en-prefix-1y6Hc2k5",
      "links": [
        [
          "past participle",
          "past participle#English"
        ],
        [
          "conjugation",
          "conjugation#English"
        ]
      ],
      "raw_glosses": [
        "(not productive, obsolete) Used with past participle conjugations to form past participles (this prefix does not occur independently and is no longer productive)."
      ],
      "tags": [
        "idiomatic",
        "morpheme",
        "obsolete"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɪ/"
    }
  ],
  "word": "y-"
}

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    "Pages with entries"
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  "etymology_templates": [
    {
      "args": {
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        "2": "gmw-pro",
        "3": "gem-pro",
        "4": "ine-pro",
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      "name": "dercat"
    },
    {
      "args": {
        "1": "en",
        "2": "enm",
        "3": "y-"
      },
      "expansion": "Middle English y-",
      "name": "inh"
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    {
      "args": {
        "1": "en",
        "2": "ang",
        "3": "ġe-",
        "pos": "perfective and associative prefix"
      },
      "expansion": "Old English ġe- (perfective and associative prefix)",
      "name": "inh"
    },
    {
      "args": {
        "1": "de",
        "2": "ge-"
      },
      "expansion": "German ge-",
      "name": "cog"
    },
    {
      "args": {
        "1": "yi",
        "2": "גע־"
      },
      "expansion": "Yiddish גע־ (ge-)",
      "name": "cog"
    }
  ],
  "etymology_text": "From Middle English y-, from Old English ġe- (perfective and associative prefix); see those entries for more. Cognate with German ge-, Yiddish גע־ (ge-).",
  "forms": [
    {
      "form": "a-",
      "tags": [
        "alternative"
      ]
    }
  ],
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    {
      "args": {
        "1": "en",
        "2": "prefix"
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      "expansion": "y-",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
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        "English prefixes",
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        "English terms derived from Old English",
        "English terms derived from Proto-Germanic",
        "English terms derived from Proto-Indo-European",
        "English terms derived from Proto-West Germanic",
        "English terms inherited from Middle English",
        "English terms inherited from Old English",
        "English terms inherited from Proto-Germanic",
        "English terms inherited from Proto-Indo-European",
        "English terms inherited from Proto-West Germanic",
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        "English unproductive prefixes",
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        "Pages with 7 entries",
        "Pages with entries"
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      "examples": [
        {
          "text": "ybarred, yclept, yclad, ybaptized, yslain, yronne"
        }
      ],
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        "Used with past participle conjugations to form past participles (this prefix does not occur independently and is no longer productive)."
      ],
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          "past participle#English"
        ],
        [
          "conjugation",
          "conjugation#English"
        ]
      ],
      "raw_glosses": [
        "(not productive, obsolete) Used with past participle conjugations to form past participles (this prefix does not occur independently and is no longer productive)."
      ],
      "tags": [
        "idiomatic",
        "morpheme",
        "obsolete"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɪ/"
    }
  ],
  "word": "y-"
}