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.
mudra mudder madeira muddier madre muter madder maduro mature midair mutter moidore moodier
mudra doura datura sudor dourah draw dray dura durra hydra hydrae hydria fedora lauder louder nuder redraw ruder sutra deodara