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.
pusley pussley pussly paisley piously pausal posole puzzle passel pizzle pozole psylla pizzelle
paisley pusley pussley sly mousily basely bossily busily easily fusile gassily isle lisle lousily mislay measly fussily piously fissile pussly resale resole rosily sassily sessile tussle wisely missile measle mussily messily aisle sole slue sloe slew hassle noisily nosily sale queasily loosely mislie slay bassly posole cosily rassle resile rissole wrassle scissile tousle weasely cheesily
pus pause poussie puss pussy opus pups