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.
pilaff pilaf pelf pahlavi
pilaff blaff leaf loaf luff bailiff bluff boiloff falloff fluff cliff gliff pilaf selloff sluff
pilau pilaw spill pipal pail pial pile pilea pilei pili pill pillow pillowy pily play plea poilu pula spile splay