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.
dissuade dissed tissued disseat deciduae tsade dossed diacid disced daisied dayside decidua deist dazed diced dosed dacite doused dowsed tasset testae tossed
dissuade sade suede passade pesade tsade sad