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.
garreted garroted garrotted greeted garoted garotted carted grated gritted guarded created grouted grottoed curetted quartette carded grided graded crated courted curated gradate carotid gridded quartet quirted corraded corroded graduate corded credit curded
ferreted turreted garreted warted merited retied grated farted fretted hearted girted borated gyrated courted berated bruted charted aerated orated parted pirated ported cerated sorted darted derated hydrated treated quirted lyrated reded created parroted carted crated curated airted garoted aurated curetted greeted garroted partied narrated marted pirouetted prated serrated sortied deaerated dirtied tarted laureated retted rated worrited shorted
garred garret garrote garrotte