A lack of assonance or similar vowel sounds; the absence of sound harmony in words.
From 'a-' (without) + 'sonia' (from 'assonance'). An extremely rare, highly technical term in prosody and literary analysis.
This word is so obscure that it barely exists in modern English—it's the kind of term a medieval grammarian might have invented but that modern linguists never needed because we just say 'lacks assonance' instead.
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