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.
decreed decried degreed dackered daggered daikered decorate dickered degrade tuckered teacart
screed creed decreed cred greedy decried agreed cried secured scried cared cored credo cured nacred sacred scared scored acred greed secrete degreed
decree decare decker decor decry decury degree