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.
bassi bass byssi bassy basso bas boss bias base buss boas bays baas bioassay baiza baize beaus bossy bos bys bus biz bes bis bise busy bees bios boys bize bice bows beys boos buys
bassi lassi ass tass sassy wrasse passe ossia mass quassia masse quass quasi gussie gauss lassie tassie gassy issei byssi asci tasse dassie cassia sass lass poussie pass bassy assai massy bass massa basso lasso chasse