*SET-U

English word origin

Etymology of idio-

Etymology tree Proto-Indo-European *swé Proto-Indo-European *swéd-yo-s Proto-Hellenic *hwédios Ancient Greek ῐ̓́δῐος (ĭ́dĭos)der. English idio- Representing a combining form of Ancient Greek ἴδιος (ídios, “own, personal,

1 source sectionExtended source reportWiktionary original ↗
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 ↗
prefix

individuality, peculiarity, separateness.

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

Etymology tree Proto-Indo-European *swé Proto-Indo-European *swéd-yo-s Proto-Hellenic *hwédios Ancient Greek ῐ̓́δῐος (ĭ́dĭos)der. English idio- Representing a combining form of Ancient Greek ἴδιος (ídios, “own, personal, distinct”). By surface analysis, idi- + -o-. Unrelated to ideo-.

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": "etymon",
      "args": {
        "1": "en",
        "2": ":der",
        "3": "grc:ῐ̓́δῐος",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *swé\nProto-Indo-European *swéd-yo-s\nProto-Hellenic *hwédios\nAncient Greek ῐ̓́δῐος (ĭ́dĭos)der.\nEnglish idio-\n[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"alt\" : \"*swéd-yo-s\", \"lang_name\" : \"Proto-Indo-European\", \"status\" : \"inline\", \"children\" : [ { \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*swé\", \"status\" : \"ok\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-Hellenic\", \"term\" : \"*hwédios\", \"status\" : \"inline\", \"lang\" : \"grk-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Ancient Greek\", \"term\" : \"ῐ̓́δῐος\", \"status\" : \"ok\", \"lang\" : \"grc\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"English\", \"term\" : \"idio-\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"idio-\">"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "grc",
        "3": "ἴδιος",
        "4": "",
        "5": "own, personal, distinct"
      },
      "expansion": "Ancient Greek ἴδιος (ídios, “own, personal, distinct”)"
    },
    {
      "name": "surf",
      "args": {
        "1": "en",
        "2": "idi-",
        "3": "-o-"
      },
      "expansion": "By surface analysis, idi- + -o-"
    },
    {
      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":der",
        "3": "grc:ῐ̓́δῐος",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *swé\nProto-Indo-European *swéd-yo-s\nProto-Hellenic *hwédios\nAncient Greek ῐ̓́δῐος (ĭ́dĭos)der.\nEnglish idio-"
    }
  ],
  "links": [
    [
      "*swé",
      "Reconstruction:Proto-Indo-European/swé"
    ],
    [
      "*hwédios",
      "Reconstruction:Proto-Hellenic/hwédios"
    ],
    [
      "ῐ̓́δῐος",
      "ἴδιος#Ancient_Greek"
    ],
    [
      "ἴδιος",
      "ἴδιος#Ancient_Greek"
    ],
    [
      "idi-",
      "idi-#English"
    ],
    [
      "-o-",
      "-o-#English"
    ],
    [
      "ideo-",
      "ideo-#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "prefix",
      "glosses": [
        "individuality, peculiarity, separateness."
      ],
      "tags": [
        "morpheme"
      ],
      "recordId": "478250176a6a2f441e2dd5aebe8ed8c5624508a6ede335cb02a10ce3e3ee7172",
      "rawRecordSha256": "dc4a2e8cf4c0ae889debb8da56ac924e1661260767e7ddc5a9b813fef30c314c",
      "sourceRecordOrdinal": 1279834
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 0,
    "glosses": 0
  }
}

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 idio- →

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-aWRpby0