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.
foredate forded foredid fretted ferreted farded farted fordid fritted fruited fortuity frittata variated
redate foredate predate radiate airdate eradiate irradiate cordate created gradate graduate laureated periodate reradiate treated chordate
foredo ford fared fiord fired fordo forte freed fried