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.
finely finally final funnel vainly vineal finial finale fennel funnily faunally vinal vinyl faunal veinal phonily veinule venally venially
finely lanely sanely lonely wanly sonly tinily anele zanily meanly bonnily noel nelly cuneal hymeneal keenly quinela tawnily chunnel inlay kennel gunnel newly knell manly moonily only pineal rainily runnel cannel tunnel leanly fennel tineal punily tinnily cineol dynel anneal snell ronnel kneel lineal onlay funnel cannily channel sunnily unlay mainly loonily queenly panel inly gainly henley vineal vainly phonily funnily shinily
fine fin fain fane finny fino foin vine