I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
trashily trachle trochil tracheal trauchle trochili tracheole tertial trochal
trashily rashly bearishly boorishly brashly fairishly freshly harshly currishly garishly grouchily preachily urushiol whorishly
trash trashy trachea tracheae trishaw