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.
gadi gaddi gad gaud goad qadi gait gaed cadi kadi gaudy gaiety caddie goodie gat cad god guid qaid goat gate gude gowd good caid cade quad caddy coati goody guide gutta
cadi gadi kadi qadi padi sadi wadi ad