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.
dreary drear darer direr drier dearer dourer trier truer tearer torero tourer tearier terrier derriere terraria
dreary rear ariary arrear briary briery farriery friary furriery horary curriery orrery drear
dare dire readier dear dearie deary deray dere deair draw dore dray dree drew dura dure reader deader