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.
cedar cedary ceder zedoary cider citer cyder seder seater seeder sudary seedier sudaria star
cedar dare wheatear deodara sudary seder cedary redear pedro retear dear deary tear teary feeder cheder cheddar feodary feudary needer weeder deodar seeder ceder deair radar redry heder midair lieder lidar gaydar heeder cheddary chadar chuddar
cede cedi aced acedia iced ceased