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.
pardah purdah pard pared pardy pardi purda prutah parade pardee parody paired parred pardie parried parodoi prod part party pored prude preed perdy perdu pride proud pried peart parity peered perdie perdue period poured parrot pureed purred parroty priedieu
purdah pardah giardia cardia corrida garda gardai querida purda
par pair para parae pare pareo pareu pariah parr parry pear spar spare sparrow sparry