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.
shrewdie shrewd shred shored shared sheared sheered shirred shortie sherd shard shaird shroud chared chored churred chirred cheered charred choired chaired choreoid chard chord shirt short shirty shorty
shrewdie rediae crowdie perdie priedieu