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.
degrease decrease degrees dekares digress decries decrees decares decuries doggeries decors dikers dackers dickers diggers deckers duckers duikers daikers dockers doggers daggers tigress daycares decorous taquerias toggeries takers tokers
crease grease decrease degrease creasy creese greasy bigarreaus sucrase