Alliteration describes a series of words in quick succession that all start with the same letter or sound. It lends a pleasing cadence to prose and poetry both. And if you have any doubts about the impact of alliteration, consider the following unforgettable titles: Love’s Labour’s Lost, Sense and Sensibility, and The Haunting of Hill House. Example: 'Peter Piper picked a pot of pickled peppers.'