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.
romeo rom roomie roam rime room roomy rhyme ramie ramee ram rem rim rum rami ream rimy
romeo comae duomo some homo pome nome mome memo gombo coombe come combo combe cameo meow meou homie homey home bombe biome mimeo gnome nomoi pomo roomie dome tome