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.
lousier loser looser laser lacier lazier leaser lesser lassoer lacer lessor leisure
busier mousier lousier user easier messier gauzier hosiery pauser nosier newsier muser massier queasier bossier fusser rosier sassier sissier dossier tusser wussier choosier goosier mouser fussier cusser cosier juicer osier noisier mussier sieur gassier causer rouser pussier houser saucier sizer douser mossier hosier hissier cheesier chouser ser sir
louies louis louse lousy blouse blousy