A slant rhyme is a type of rhyme with words that have similar, but not identical sounds. Most slant rhymes are formed by words with identical consonants and different vowels, or vice versa. “Worm” and “swarm” are examples of slant rhymes. A slant rhyme is also called a half rhyme, near rhyme, sprung rhyme, off rhyme, lazy rhyme, oblique rhyme, or approximate rhyme.