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.
lewdest leadiest loudest latest lutist
lewdest fideist readiest oddest moodiest neediest doest baddest modest beadiest bawdiest faddiest deediest seediest tidiest saddest widest ruddiest shadiest reediest deist headiest gaudiest podesta nudest modesty muddiest loudest leadiest maddest giddiest hoodiest haddest deadest sawdust dowdiest rudest weediest rowdiest woodiest reddest shoddiest