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.
treaded traded dreaded treated turreted tarted derided trotted teratoid deaerated darted derated dirtied dratted
breaded dreaded treaded shredded treated graded readied traded marauded reded paraded laureated guarded created carded raided readded redded reeded bearded barded boarded bradded braided farded herded hoarded larded corraded warded radded yarded
tread trad dread tared teredo tirade tired trade treat treaty treed triad tried trued tyred