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.
stiller stillier sidler staler styler sutler settler stealer stellar steelier stelar stylar saddler settlor saddlery
tiller stiller detailer tailleur idler toller toiler tiler teller tallier taller modeller dallier duller dueller dialler dialer pedaller sidler tailer retailer stillier yodeller
still stilly stall stella stile stull