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.
monetary monitory monitor montero mounter mantra mender minder minter maunder meander mintier minuter minatory minaudiere mentor
monetary notary entry gentry reentry centaury sanitary sentry unitary
moaned monde monied monte mooned mount