*SET-U

English word origin

Etymology of oneth

Etymology tree Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Germanic *ainaz Proto-West Germanic *ain Old English ān Middle English on English one English -th English oneth From one + -th (ordinal suffix).

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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

'first', or other ordinal derivatives of 'one', such as hundred-and-oneth or minus-oneth · Used at the end of algebraic expressions indicating ordinal position that end in 1, such as (k+1)ᵗʰ

noun

(in compounds with twenty-, thirty-, forty-, etc.) A fractional part of an integer ending in one · An ordinal value that is represented by an expression ending in 1 such as the (n + 1)th.

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

Etymology tree Proto-Indo-European *ís? Proto-Indo-European *h₁óynos Proto-Germanic *ainaz Proto-West Germanic *ain Old English ān Middle English on English one English -th English oneth From one + -th (ordinal suffix).

Inspect preserved source fields

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

{
  "templates": [
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":af",
        "3": "one",
        "4": "-th<pos:ordinal suffix><id:ordinal>",
        "text": "+",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *ís?\nProto-Indo-European *h₁óynos\nProto-Germanic *ainaz\nProto-West Germanic *ain\nOld English ān\nMiddle English on\nEnglish one\nEnglish -th\nEnglish oneth\n[Appendix:Glossary#inherited|Inherited]] from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*ainaz\", \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-West Germanic\", \"term\" : \"*ain\", \"lang\" : \"gmw-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Old English\", \"term\" : \"ān\", \"lang\" : \"ang\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Middle English\", \"term\" : \"on\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"English\", \"term\" : \"one\", \"status\" : \"ok\", \"lang\" : \"en\" }, { \"id\" : \"ordinal\", \"children\" : [ ], \"status\" : \"missing\", \"lang_name\" : \"English\", \"term\" : \"-th\", \"lang\" : \"en\", \"pos\" : \"ordinal suffix\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang_name\" : \"English\", \"term\" : \"oneth\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"oneth\">\nFrom one + -th (ordinal suffix)."
    },
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":af",
        "3": "one",
        "4": "-th<pos:ordinal suffix><id:ordinal>",
        "text": "+",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *ís?\nProto-Indo-European *h₁óynos\nProto-Germanic *ainaz\nProto-West Germanic *ain\nOld English ān\nMiddle English on\nEnglish one\nEnglish -th\nEnglish oneth\nFrom one + -th (ordinal suffix)."
    }
  ],
  "links": [
    [
      "*ís",
      "Reconstruction:Proto-Indo-European/ís"
    ],
    [
      "*h₁óynos",
      "Reconstruction:Proto-Indo-European/h₁óynos#Proto-Indo-European:_one"
    ],
    [
      "*ainaz",
      "Reconstruction:Proto-Germanic/ainaz#Proto-Germanic:_one"
    ],
    [
      "*ain",
      "Reconstruction:Proto-West Germanic/ain#Proto-West_Germanic:_one"
    ],
    [
      "ān",
      "an#Old_English:_one"
    ],
    [
      "on",
      "on#Middle_English:_one"
    ],
    [
      "one",
      "one#English"
    ],
    [
      "-th",
      "-th#English:_ordinal"
    ],
    [
      "one",
      "one#English"
    ],
    [
      "-th",
      "-th#English:_ordinal"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "adj",
      "glosses": [
        "'first', or other ordinal derivatives of 'one', such as hundred-and-oneth or minus-oneth",
        "Used at the end of algebraic expressions indicating ordinal position that end in 1, such as (k+1)ᵗʰ"
      ],
      "tags": [
        "nonstandard",
        "not-comparable"
      ],
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      "rawRecordSha256": "4d36b7ecfb52add456c0764523cbe342451661ea7d5c92a9d65d67f6b592eb43",
      "sourceRecordOrdinal": 1056301
    },
    {
      "pos": "noun",
      "glosses": [
        "(in compounds with twenty-, thirty-, forty-, etc.) A fractional part of an integer ending in one",
        "An ordinal value that is represented by an expression ending in 1 such as the (n + 1)th."
      ],
      "tags": [
        "nonstandard"
      ],
      "recordId": "c81ee14b46c1b4257399d884951c152a4c06d06fe527830d19ba71c32bba249f",
      "rawRecordSha256": "33154d1457f20623abdcd47fb64d829f16c796ad3c7ceb79139b6e3735b52bac",
      "sourceRecordOrdinal": 1056302
    }
  ],
  "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 oneth →

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-b25ldGg