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.
fierily ferly fairly verily ferial frilly frailly furrily feral frail frill virile freely ferule ferrel ferula ferrule ferulae virally virelay farl furl virl viral ferlie gharial variola variole virelai
eerily verily aerily leerily cheerily fierily merrily wearily charily queerly frilly derail early furrily gorily ferly ferial peril sorrily shrilly cheerly sheerly riley puerile roily warily merely drily wirily dearly nearly hoarily airily serail aerial pearly serial tearily yearly
faerie feirie feria feriae fiery fifer fiver fer fir