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.
stelai stela stella stelae steelie stele styli steel steal steely sedilia stole still stall style sotol stale stile stool stull setal settle cedula citola sedile seidel stilly cedilla seedily sootily stoolie
stelai delay deli duelli tela telae telia teloi patella steelie stela stelae stella