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.
diuretic dieretic diaeretic dioritic toreutic
heretic diuretic pyretic uretic cretic dieretic diaeretic paretic dioritic aortic parotic quartic soritic erotic pyritic piratic portico toreutic critic neuritic barytic neurotic noritic phreatic xerotic erratic neritic hieratic iritic cerotic uratic ferritic choreatic