Assonance

Definition: "In poetry, the repetition of the sound of a vowel or diphthong in nonrhyming stressed syllables near enough to each other for the echo to be discernible." - Oxford Dictionary for MacBooks

Diphthong definition: "a sound formed by the combination of two vowels in a single syllable, inwhich the sound begins as one vowel and moves toward another (as in coin ,loud, and side)." - Oxford Dictionary for MacBooks

Example: It's cool to be a fool but not a tool. "So frightful a nightfall folded rueful a day" (TM) (The frog jumped over the log but not like the dog) KH

Sources: oxford dictionary for macbook http://examples.yourdictionary.com/assonance-examples.html

- Trevor Hiseler