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.
piratic paretic parotic portico pyretic pyritic periotic pratique parodic pyridic periodic partake partook
hieratic uratic erratic piratic uretic dioritic neritic diuretic neuritic dieretic cretic xerotic iritic cerotic paretic pyretic critic neurotic quartic heretic phreatic erotic barytic aortic noritic parotic ferritic diaeretic portico pyritic soritic faradic choreatic
pirate prat prate spirt sprat uprate