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.
gluiness glueyness guylines clines gluons kaolines galleins coolness glans glens cleanness gleans colins glance clones callowness collins kaolins galenas colones kalians gallons galleons colonies cullions galloons clans clons kilns cleans clonus clowns colons
villainess hilliness mealiness holiness chilliness wooliness dailiness lowliness silliness jolliness oiliness jowliness wiliness gluiness woolliness slyness beelines delaines cleanness illness dulness relines villainies jawlines guylines fallowness fulness mellowness towlines alines foulness realness paleness millines blueness oleines tallness callowness glueyness chillness slowness shallowness sallowness wholeness lowness malines bowlines sullenness valines dailyness fullness clines lines fellness dullness felines kaolines lianes leanness wellness vileness maleness plainness haleness soleness hollowness coolness alienness salines bylines cholines lioness hyalines