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.
toadish dudish detach
jadish toadish radish dish reddish laddish dishy faddish caddish goatish goodish maidish loudish latish modish oddish kiddish dudish maddish kaddish widish
toadied toad toady stadia tad tod