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