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.
grated graded crated gritted garoted curated grouted greeted gradate created grottoed graduate garreted garroted garotted grided carted garrotted curtate guarded gridded cordate courted quirted keratoid gratuity curetted corraded corotate curded corded carded credit cordite crawdad crowded crudded gordita quartet carotid corroded
aurated gyrated borated curated laureated muriated aerated seriated grated created hydrated serrated derated prated lyrated lariated rated variated treated orated berated deaerated pirated cerated narrated crated ported irritate grouted fritted fruited curetted graded marted dirtied airted garroted ratted parroted garoted ferreted dreaded breaded bruited dratted pirouetted chordate charioted warted trotted treaded tarted curtate rooted proteid sortied bruted sorted predate farted garotted eradiate darted deratted gradate foredate partied rotted courted corotate hearted gritted rotate cordate airdate greeted rerouted redate quirted parted corraded garreted rioted fretted paraded retied grottoed reradiate prettied graduate irradiate routed radiate carted garrotted girted rutted periodate retted traded merited turreted worrited charted shorted
grat grate crate grad grade great grit gritty groat grot grotto grotty