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.
ferula ferulae ferule ferrule feral ferly ferrel ferlie ferial fierily farl furl frail frill fairly freely frilly verily frailly furrily variola virelai virelay
ferula morula neurula torula morulae trull gruel pyrola parlay neurulae ferulae curule ferule ferrule ruly rule torulae cruel truly
fer faerie faery fear feirie fere feria feriae ferry feuar fiery