In linguistics, apophony (also known as ablaut, (vowel) gradation, (vowel) mutation, alternation, internal modification, stem modification, stem alternation...

English record /ˈrɛkərd/ (noun) ↔ /rɨˈkɔrd/ "to make a record" Consonantal apophony, such as the initial-consonant mutations in Celtic languages, also exists...

(/ˈæblaʊt/ AB-lowt, from German Ablaut pronounced [ˈaplaʊt]) is a system of apophony (regular vowel variations) in the Proto-Indo-European language (PIE). An...

The Northern Bavarian verbs are also subject to both vowel change and apophony. The non-finite forms have one three endings: [∅], [n] and [ɐ]. The first...

changing their stem vowel (e.g., binden became bound, a process called apophony), as in Modern English. With the discontinuation of the Late West Saxon...

a stem remains unmodified during inflection with few exceptions due to apophony (for example in Polish, miast-o ("city") and w mieść-e ("in the city");...

undergo a stress shift when the plural is formed. Nouns which undergo apophony. Nouns which take a suffix and undergo a stress shift in the plural form...

Finnish and Estonian since they involve consonant gradation but also vowel apophony. Inflections in fusional languages tend to fall in two patterns, based...

mutation in which consonant sounds alternate between various "grades" Apophony or vowel gradation, sound change within a word that indicates grammatical...

feminine) to the singular form. The internal plural employs vowel quality or apophony to pluralize words, similar to English man vs. men and goose vs. geese...