Rhyming dictionaries exist in both paper and online formats. Online dictionaries include rhymezone.com, rhymer.com and writeexpress.com, and they are free of charge. They are of particular use to writers of poetry, song lyrics and ad copy.
Rhyming dictionaries categorize words by the similarity of sound in their pronunciation, particularly with respect to the final syllable in each word. The list of rhyming words generated is often further sectioned by the number of syllables in the words on the list. For example, entering the word "rhyme" generates several one-syllable options ("chime," "climb" and "slime"), as well as several two-syllable and three-syllable options ("bedtime," "sublime," "paradigm" and "pantomime").