*SET-U

English word origin

Etymology of ides

From Middle English ides, idus, from Anglo-Norman and Old French ides, from Latin īdūs, a fourth-declension plurale tantum, from the Latin practice of treating most recurring calendrical days as plurals. The Latin term i

2 source sectionsExtended source reportWiktionary original ↗
In this entry · 2 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.

Source etymology 1

Original entry ↗
noun

The notional full-moon day of a Roman month, occurring on the 15th day of the four original 31-day months (March, May, Quintilis or July, and October) and on the 13th day of all other months.

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

From Middle English ides, idus, from Anglo-Norman and Old French ides, from Latin īdūs, a fourth-declension plurale tantum, from the Latin practice of treating most recurring calendrical days as plurals. The Latin term is cognate with Oscan eiduis, both perhaps deriving from an unknown Etruscan term. Middle English and Old French also used the singular form ide.

Relationships mentioned by the source

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

  • Inherited-form mentionidesenm
  • Derivation mentionidesfro
  • Derivation mentionīdūsla
Inspect preserved source fields

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

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      "args": {
        "1": "en",
        "2": "enm",
        "3": "ides"
      },
      "expansion": "Middle English ides"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "xno",
        "3": "-"
      },
      "expansion": "Anglo-Norman"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "fro",
        "3": "ides"
      },
      "expansion": "Old French ides"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "la",
        "3": "īdūs"
      },
      "expansion": "Latin īdūs"
    }
  ],
  "links": [
    [
      "ides",
      "ides#Middle_English"
    ],
    [
      "idus",
      "idus#Middle_English"
    ],
    [
      "ides",
      "ides#Old_French"
    ],
    [
      "īdūs",
      "idus#Latin"
    ],
    [
      "plurale tantum",
      "plurale tantum"
    ],
    [
      "ide",
      "ide#Old_French"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "The notional full-moon day of a Roman month, occurring on the 15th day of the four original 31-day months (March, May, Quintilis or July, and October) and on the 13th day of all other months."
      ],
      "tags": [
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}

Source etymology 2

Original entry ↗
noun

plural of ide

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

See ide.

Inspect preserved source fields

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

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  "templates": [],
  "links": [
    [
      "ide",
      "ide#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "plural of ide"
      ],
      "tags": [
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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 ides →

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
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Import run
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Permanent entry ID
w-aWRlcw