*SET-U

English word origin

Etymology of ablaut

Etymology tree Proto-Indo-European *h₂ep Proto-Indo-European *-o Proto-Indo-European *h₂epó Proto-Germanic *ab Old High German ab Middle High German ab German ab German ab- Proto-Indo-European *ḱel- Proto-Indo-European *

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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 ↗
verb

To undergo a change of vowel. · To cause to change a vowel.

noun

The substitution of one root vowel for another, thus indicating a corresponding modification of use or meaning; vowel permutation, distinct from the phonetic influence of a succeeding vowel.

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

Etymology tree Proto-Indo-European *h₂ep Proto-Indo-European *-o Proto-Indo-European *h₂epó Proto-Germanic *ab Old High German ab Middle High German ab German ab German ab- Proto-Indo-European *ḱel- Proto-Indo-European *ḱlew- Proto-Indo-European *-tós Proto-Indo-European *ḱlutós Proto-Germanic *hlūdaz Proto-West Germanic *hlūd Old High German lūt Middle High German lūt German Laut German Ablautbor. English ablaut Borrowed from German Ablaut (“sound gradation”), which is from ab- or ab (“down, off”), + Laut (“sound”). Ab is used here in the sense of “deviating, varying” as in Abgott (“god other than the true God”), Abart (“different sort, variety, anomality”).

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": ":bor",
        "3": "de:Ablaut",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *h₂ep\nProto-Indo-European *-o\nProto-Indo-European *h₂epó\nProto-Germanic *ab\nOld High German ab\nMiddle High German ab\nGerman ab\nGerman ab-\nProto-Indo-European *ḱel-\nProto-Indo-European *ḱlew-\nProto-Indo-European *-tós\nProto-Indo-European *ḱlutós\nProto-Germanic *hlūdaz\nProto-West Germanic *hlūd\nOld High German lūt\nMiddle High German lūt\nGerman Laut\nGerman Ablautbor.\nEnglish ablaut\n[Appendix:Glossary#loanword|Borrowed]] from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"id\" : \"from\", \"children\" : [ { \"terms\" : [ { \"id\" : \"of\", \"children\" : [ { \"terms\" : [ { \"id\" : \"of\", \"children\" : [ { \"terms\" : [ { \"id\" : \"away\", \"children\" : [ { \"terms\" : [ { \"id\" : \"away\", \"children\" : [ { \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*h₂ep\", \"status\" : \"missing\", \"lang\" : \"ine-pro\" }, { \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*-o\", \"status\" : \"missing\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*h₂epó\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*ab\", \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Old High German\", \"term\" : \"ab\", \"lang\" : \"goh\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"inline\", \"lang_name\" : \"Middle High German\", \"term\" : \"ab\", \"lang\" : \"gmh\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"German\", \"term\" : \"ab\", \"lang\" : \"de\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang_name\" : \"German\", \"term\" : \"ab-\", \"status\" : \"ok\", \"lang\" : \"de\" }, { \"children\" : [ { \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"id\" : \"loud\", \"children\" : [ { \"terms\" : [ { \"id\" : \"loud\", \"children\" : [ { \"terms\" : [ { \"id\" : \"loud\", \"children\" : [ { \"terms\" : [ { \"id\" : \"heard\", \"children\" : [ { \"terms\" : [ { \"id\" : \"hear\", \"children\" : [ { \"terms\" : [ { \"id\" : \"incline\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*ḱel-\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*ḱlew-\", \"lang\" : \"ine-pro\" }, { \"id\" : \"verbal adjectives\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*-tós\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*ḱlutós\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*hlūdaz\", \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-West Germanic\", \"term\" : \"*hlūd\", \"lang\" : \"gmw-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Old High German\", \"term\" : \"lūt\", \"lang\" : \"goh\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Middle High German\", \"term\" : \"lūt\", \"status\" : \"ok\", \"lang\" : \"gmh\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"German\", \"term\" : \"Laut\", \"status\" : \"ok\", \"lang\" : \"de\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang_name\" : \"German\", \"term\" : \"Ablaut\", \"status\" : \"ok\", \"lang\" : \"de\" } ], \"keyword\" : \"bor\" } ], \"lang_name\" : \"English\", \"term\" : \"ablaut\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"ablaut\">"
    },
    {
      "name": "bor+",
      "args": {
        "1": "en",
        "2": "de",
        "3": "Ablaut",
        "gloss": "sound gradation"
      },
      "expansion": "Borrowed from German Ablaut (“sound gradation”)"
    },
    {
      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":bor",
        "3": "de:Ablaut",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *h₂ep\nProto-Indo-European *-o\nProto-Indo-European *h₂epó\nProto-Germanic *ab\nOld High German ab\nMiddle High German ab\nGerman ab\nGerman ab-\nProto-Indo-European *ḱel-\nProto-Indo-European *ḱlew-\nProto-Indo-European *-tós\nProto-Indo-European *ḱlutós\nProto-Germanic *hlūdaz\nProto-West Germanic *hlūd\nOld High German lūt\nMiddle High German lūt\nGerman Laut\nGerman Ablautbor.\nEnglish ablaut"
    }
  ],
  "links": [
    [
      "*h₂ep",
      "Reconstruction:Proto-Indo-European/h₂ep"
    ],
    [
      "*-o",
      "Reconstruction:Proto-Indo-European/-o"
    ],
    [
      "*h₂epó",
      "Reconstruction:Proto-Indo-European/h₂epó#Proto-Indo-European:_away"
    ],
    [
      "*ab",
      "Reconstruction:Proto-Germanic/ab#Proto-Germanic:_away"
    ],
    [
      "ab",
      "ab#Old_High_German:_of"
    ],
    [
      "ab",
      "ab#Middle_High_German:_of"
    ],
    [
      "ab",
      "ab#German:_from"
    ],
    [
      "ab-",
      "ab-#German"
    ],
    [
      "*ḱel-",
      "Reconstruction:Proto-Indo-European/ḱel-#Proto-Indo-European:_incline"
    ],
    [
      "*ḱlew-",
      "Reconstruction:Proto-Indo-European/ḱlew-#Proto-Indo-European:_hear"
    ],
    [
      "*-tós",
      "Reconstruction:Proto-Indo-European/-tós#Proto-Indo-European:_verbal_adjectives"
    ],
    [
      "*ḱlutós",
      "Reconstruction:Proto-Indo-European/ḱlutós#Proto-Indo-European:_heard"
    ],
    [
      "*hlūdaz",
      "Reconstruction:Proto-Germanic/hlūdaz#Proto-Germanic:_loud"
    ],
    [
      "*hlūd",
      "Reconstruction:Proto-West Germanic/hlūd#Proto-West_Germanic:_loud"
    ],
    [
      "lūt",
      "lut#Old_High_German:_loud"
    ],
    [
      "lūt",
      "lut#Middle_High_German"
    ],
    [
      "Laut",
      "Laut#German"
    ],
    [
      "Ablaut",
      "Ablaut#German"
    ],
    [
      "Ablaut",
      "Ablaut#German"
    ],
    [
      "ab-",
      "ab-#German"
    ],
    [
      "ab",
      "ab#German"
    ],
    [
      "Laut",
      "Laut#German"
    ],
    [
      "Abgott",
      "Abgott#German"
    ],
    [
      "Abart",
      "Abart#German"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "verb",
      "glosses": [
        "To undergo a change of vowel.",
        "To cause to change a vowel."
      ],
      "tags": [
        "intransitive",
        "transitive"
      ],
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      "rawRecordSha256": "78f31ed7e2064b3b7d1f825d86faf49e506fd35fb23a9a350a7f6d2af821ba6e",
      "sourceRecordOrdinal": 1761
    },
    {
      "pos": "noun",
      "glosses": [
        "The substitution of one root vowel for another, thus indicating a corresponding modification of use or meaning; vowel permutation, distinct from the phonetic influence of a succeeding vowel."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "recordId": "d90b15dfe689141f991d86c4f806fd3e5851b855ea5f36503bf57092781e6ca7",
      "rawRecordSha256": "e14ae88e105f91c768a9e65c91518fb22a3d3cba66b7f6ef633d086e1b7c4472",
      "sourceRecordOrdinal": 1760
    }
  ],
  "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 ablaut →

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-YWJsYXV0