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.
loosened lessened lisente lessoned licente lucent
lessened loosened send sned scend dozened seined descend sente rosined ascend resend basined reascend saned cozened lessoned reasoned lisente resined masoned seasoned missend dizened poisoned wizened