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.
feral ferial ferly frail ferlie ferrel ferula ferule farl ferulae frailly ferrule furl fierily frill viral fairly freely frilly verily furrily gharial virally virl
feral seral frail narial neural burial goral queerly grail trawl loreal oral curial morale gyral merle boral horal coral beryl ureal earl chorial chorale cereal chiral woorali pearl aerial drail rural dural ferial viral boreal sural zoarial craal moral brail graal jural corral gooral crawl kraal irreal trail merl rial aural rail brawl ferly areal nerol mural serail loral derail surreal serial real oorali ceorl drawl herl peril trial gharial urial cheerly rale choral choreal parral sheerly
fer faerie faery fear feirie fere feria feriae ferry feuar fiery fora foray frae fray vera