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.
pardee parade pardie pard pardy preed pared prude pride pardi pardah parred perdie paired pureed parody perdue proette parried parodoi part prod priedieu peart purda party perdu perdy prate pored proud pried pirouette protei pyrite parity purdah pretty poured parrot pirate period purred peered parroty yperite
pardee rede freed rude arete rode gride pardie parade perdue gourde greed creed pride pureed corrade deride joyride hydride horde tirade jereed treed rete weirdie ride reed boride preed erode brede bourride breed greet barde merde perdie crude grade corrode prude birdie joyrode sarode jerreed dreed hayride terete irade trade burdie trode bride charade
par pair para parae pare pareo pareu pariah parr parry pear spar spare sparrow sparry