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.
krill grill grille criollo gorilla guerilla kraal grail guerrilla curial gorily cariole carrell corolla cruelly carriole carl curl
rill trill krill shrill brill frill prill drill grill zorillo leerily rouille reroll braille hydrilla drily gharial serail zoarial broil aerily derail barilla guerrilla peril sorrily narial virile ferial cheerily wirily warily trull frailly airily hoarily aril serial fierily zorille zoril aerial puerile drail ariel verily grail gorilla oriel riel perilla tearily eerily payroll rile burial brail droll grille curial trial gorily chorial merrily charily roll carrell frail triol rail brillo rial roil zorilla guerilla rille furrily trail frilly troll urial wearily shrilly