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