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.
friary friar frier furriery farriery firrier furrier fierier farrier furor frore farer frere freer firer fairer fearer fuhrer furore varier verier fuehrer
ariary briary friary briar briery farriery friar furriery horary curriery priory dreary
feria feriae fiar fora foray frae fray