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.
opted opiated
coapted coopted opted pupated tippytoed putted spouted peptid spitted opiated spatted lappeted septet heptad repotted puttied potted pouted pitted pitied petted patted pated pipetted repeated reputed sopited spited spotted deputed tiptoed