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.
stella stela stelae stelai stull steel stele still steal stall stilly steely cedilla steelie sedilia stale style sotol stool stile setal stole styli cedula citola sedile seidel settle seedily sootily stoolie
patella stella stelae telae stelai stela retell tell delly duelli duello tela dell cedilla delay telly bedell cadelle latilla medulla medullae outtell patellae telia