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.
crashed crushed creeshed crotched crouched crutched crochet crotchet cruciate grouched grutched crotchety
crashed trashed preached perished nourished crushed creeshed freshed broached brushed breached airshed rushed roached reshoed reached cherished