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.
sari sri souari sori soar sear saury saree serai zoaria sir ser sour sore sere sora sire sera suer sura zori sure seer cirri serow serry siree sirra sorry surah surra zaire ceria sieur