*SET-U

English word origin

Etymology of Irish

From Middle English Irish (12th c.), from Old English *Īrisċ, from Old English Īras (“Irishmen”), from Old Norse Írar, from Old Irish Ériu (modern Irish Éire (“Ireland”)), further origin heavily debated but probably from

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In this entry · 1 source sections

The source etymologies

Wiktionary via Kaikki / Wiktextract

The source reports below are imported and unreviewed by *SET-U. Separate numbered origins and differing source variants are preserved; agreement within this extraction is not independent corroboration.

Unnumbered source etymology

Original entry ↗
adj

Pertaining to or originating from Ireland or the Irish people. · Pertaining to the Irish language.

name

The Gaelic language indigenous to Ireland, also known as Irish Gaelic. · The Irish people. · A surname originating as an ethnonym. · A female given name of chiefly Philippine usage.

noun

A board game of the tables family. · Temper; anger, passion. · Whiskey, or whisky, elaborated in Ireland.

Selected source glosses provide context, not a complete modern definition inventory

From Middle English Irish (12th c.), from Old English *Īrisċ, from Old English Īras (“Irishmen”), from Old Norse Írar, from Old Irish Ériu (modern Irish Éire (“Ireland”)), further origin heavily debated but probably from Proto-Celtic *Φīweriyū (“fat land, fertile”), from Proto-Indo-European *péyh₂wr̥ (“fat, swelling”), from *peyh₂- (“to swell; to be fat”), akin to Ancient Greek πῑ́ειρα (pī́eira, “fertile land”), Sanskrit पीव॑री (pī́varī, “fat”).

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

{
  "templates": [
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "Irish"
      },
      "expansion": "Middle English Irish"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "*Īrisċ"
      },
      "expansion": "Old English *Īrisċ"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "Īras",
        "4": "",
        "5": "Irishmen"
      },
      "expansion": "Old English Īras (“Irishmen”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "non",
        "3": "Írar"
      },
      "expansion": "Old Norse Írar"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "sga",
        "3": "Ériu"
      },
      "expansion": "Old Irish Ériu"
    },
    {
      "name": "cog",
      "args": {
        "1": "ga",
        "2": "Éire",
        "3": "",
        "4": "Ireland"
      },
      "expansion": "Irish Éire (“Ireland”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "cel-pro",
        "3": "*Φīweriyū",
        "t": "fat land, fertile"
      },
      "expansion": "Proto-Celtic *Φīweriyū (“fat land, fertile”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*péyh₂wr̥",
        "t": "fat, swelling"
      },
      "expansion": "Proto-Indo-European *péyh₂wr̥ (“fat, swelling”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "grc",
        "2": "πῑ́ειρα",
        "3": "",
        "4": "fertile land"
      },
      "expansion": "Ancient Greek πῑ́ειρα (pī́eira, “fertile land”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "sa",
        "2": "पीव॑री",
        "3": "",
        "4": "fat"
      },
      "expansion": "Sanskrit पीव॑री (pī́varī, “fat”)"
    }
  ],
  "links": [
    [
      "Irish",
      "Irish#Middle_English"
    ],
    [
      "*Īrisċ",
      "Reconstruction:Old English/Irisc"
    ],
    [
      "Īras",
      "Iras#Old_English"
    ],
    [
      "Írar",
      "Írar#Old_Norse"
    ],
    [
      "Ériu",
      "Ériu#Old_Irish"
    ],
    [
      "Éire",
      "Éire#Irish"
    ],
    [
      "*Φīweriyū",
      "Reconstruction:Proto-Celtic/Φīweriyū"
    ],
    [
      "*péyh₂wr̥",
      "Reconstruction:Proto-Indo-European/péyh₂wr̥"
    ],
    [
      "*peyh₂-",
      "Reconstruction:Proto-Indo-European/peyh₂-"
    ],
    [
      "πῑ́ειρα",
      "πίειρα#Ancient_Greek"
    ],
    [
      "पीव॑री",
      "पीवरी#Sanskrit"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "adj",
      "glosses": [
        "Pertaining to or originating from Ireland or the Irish people.",
        "Pertaining to the Irish language."
      ],
      "tags": [],
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      "pos": "name",
      "glosses": [
        "The Gaelic language indigenous to Ireland, also known as Irish Gaelic.",
        "The Irish people.",
        "A surname originating as an ethnonym.",
        "A female given name of chiefly Philippine usage."
      ],
      "tags": [
        "uncountable"
      ],
      "recordId": "8537cab12c36cc6dd9e13c19118ba8c3d67bc14b093bd10326e58812b9216482",
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    },
    {
      "pos": "noun",
      "glosses": [
        "A board game of the tables family.",
        "Temper; anger, passion.",
        "Whiskey, or whisky, elaborated in Ireland."
      ],
      "tags": [
        "obsolete",
        "uncountable",
        "US",
        "countable"
      ],
      "recordId": "c0024fd86a179e373cea76a69e96f18f2458acf24766e3f03959c95258ef418b",
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  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
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    "lexicalRecords": 0,
    "lexicalSenses": 0,
    "glosses": 0
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}

Where this record stops

This page does not supply an independently verified sound-change sequence, first-use manuscript or complete family tree unless a cited analysis explicitly establishes one. Missing detail here is a limit of this record—not a claim that humanity knows nothing more.

An older meaning does not determine what a word must mean today. Follow the sources, preserve disagreements, and keep ancestry separate from interpretation.

Contribute located evidence for Irish →

Source and snapshot

Imported from Wiktionary contributors; extracted by Tatu Ylonen / Wiktextract / Kaikki.org. Selected fields are reformatted and grouped; wording, source identity and etymology sections are retained. CC-BY-SA-4.0 applies to the imported source material.

Dump: 2026-10-01 · Extracted: 2026-10-30. These are snapshot dates, not the word’s first attestation or the page’s revision date.

Source entry and bibliography ↗Wiktionary revision history ↗Acquisition and rights ledger
Machine-source provenance
Source SHA-256
5ff2c072f8099f2d2ce484bd6957bf179f046d2ad37bc36555edf8bb84cb5291
Import run
73216b9a9b78ed3830994bf853103716f5a4dc57099e371e9f8fdc468facca26
Permanent entry ID
w-SXJpc2g