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.
carded curded carted corded guarded crowded crudded corroded cardioid corraded credit grided crated graded garoted gridded crawdad cordite cordate courted created carotid curated curetted garotted garreted garroted crawdaddy garrotted grated crudity curtate gradate greeted gritted grouted quartet quirted corotate graduate grottoed
barded hoarded farded herded carded warded girded horded worded lorded yarded birded curded boarded bearded forded weirded larded corded guarded chorded prodded readded paraded courted readied redded bradded carted raided girted quirted prided fordid braided radded graded sordid corraded warted crudded shorted hearted shrouded crowded marauded charted tarted traded darted corroded ridded birdied farted eroded reeded derided marted dreaded gridded reded airted sorted treaded ported breaded brooded rodded shredded grided parodied parted
card cardia cardiae cardio carroty scarred credo ecarte carrot acarid cord garda carte curd cart cruddy crud carried caried caret crude cared curdy carate gardai carat acaroid caird scared cred scart