n. Resemblance of sounds.n. Specifically In prosody, a species of imperfect rime, or rather a substitute for rime, especially common in Spanish poetry, consisting in using the same vowel-sound with different consonants, and requiring the use of the same vowels in the assonant words from the last accented vowel to the end of the word: thus, man and hat, penitent and reticence, are examples of assonance in English.n. Agreement or harmony of things.n. Synonyms Paronomasia, etc. See pun.