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.
sopited spited spitted spatted spotted spouted septet spaded septate speeded spudded sapidity septette zapateado
sopited spited pated pitied pitted coapted coopted lappeted opiated opted pupated reputed spitted deputed tiptoed