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.
torpedo torpid trapped tripped trooped trouped draped trepid dripped drooped dropped trippet trapt tripod tripody
torpedo griped chirruped warped draped syruped siruped cirriped larruped groped creped raped craped carped harped burped roped riped urped chirped sharped