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.
grody grotty grouty corody greedy crowdy grot grid grad corrody garda grout groat grade gourd guard greed curdy crowd gride gored griot garote gourde gritty gardai grotto garred cruddy carroty corrode garrote garotte crowdie garrotte card cord cred crud curd grat grit
corrody corody parody grody rod curdy erode rowdy lardy broad neuroid sarode carroty joyrode period crowdy sarod sciuroid droid tardy trod weirdy choroid proud corrode viroid crowd broody rood byroad parroty hardy pardy perdy road brood prod aroid nerdy rode zeroed hydroid toroid trode wordy shroud