ablaut.
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.
Meaning & usage
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.
Where this word comes from
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 *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”).
To undergo a change of vowel.
To cause to change a vowel.
Where this word comes from
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 *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”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.