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.
purda purdah poured purred pureed pardah peridia prod pard prat pardy prude preed perdy prate perdu pride proud pared pruta purty pried pored pardi parred parade paired perdue pardie pardee peered perdie period protea prutah parody purity pirate parodoi parried part pert port
purda urd burd sciurid cured pardah murid lurid loured querida kurta guard gourde gourd gardai garda giardia surd curd corrida cardia jurat lured mured nurd poured purdah soured dured turd curdy toured yurta
pur pour pure puree puri purr spur spurrey spurry