The process of vowel turning into its ablaut variant(noun)
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Use "ablauting" in a sentence
"So we have an ablauting -es -os suffix which would betray an unaccented schwa *a."
""So we have an ablauting -es -os suffix which would betray an unaccented schwa *a.""
"Obviously this is difficult to justify if you don't see it back in other ablauting paradigms, but even in Hittite these have already become incredibly rare."