the effect created when two syllables in words that are close together have the same vowel sound, but different consonants, or the same consonants but different vowels, for example, sonnet and porridge or cold and killed see also alliterationTopics Languagec2準押韻,半諧韻,半諧音(靠得很近的單詞中有兩個音節元音相同而輔音不同,或輔音相同而元音不同) Word Originearly 18th cent.: from French, from Latin assonare ‘respond to’, from ad- ‘to’ + sonare (from sonus ‘sound’).