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.
missend missent missound missioned masoned mucinoid maisonette
missend send scend ascend assent lessened loosened missent reascend resend descend dissent wessand