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.
friar friary frier firrier furrier fierier farrier furriery farriery furor frore farer frere freer firer fairer fearer fuhrer furore varier verier fuehrer
briar friar aurar beerier briary brier burier burrier barrier aerier rare frier varier hairier hoarier hurrier currier curara quarrier learier marrier mirier parrier prior drear tarrier terraria trier warier wearier worrier charrier courier arrear eyrir curare wrier roar rear eerier farrier firrier airier ariary fierier friary furrier verier harrier horary crier carrier gorier querier leerier merrier moorier prier sorrier drier tearier terrier urare warrior wirier charier cheerier
feria feriae fiar fora foray frae fray