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.
man mana moan mane main maun mawn mean mano many manna meany mania meanie mun mon men mini myna mown muni meno mien mono menu hymn mine mina muon moon mony money moony monie meiny minny minae hymen mynah meinie minnow