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.
gravy grave garvey greave groovy crave curvy graph grove curvey grieve groove gruffy
gravy curvey drave purvey privy nervy marvy grave garvey curvy crave rave jarvey bravo bravi brave brava survey trave