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.
maugre maigre meagre muggar mugger muggur muggier macro makar maker mucor mucro megara mucker muckier
maugre quare sugar squire secure regrew puggree meagre maigre gore gree grew grey grue cure agree quire augur eagre figure cougar ligure lucre curie ogre pugree require square sucre degree
mag mug maguey maqui mugg muggee muggy imago smug