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.
hilliness holiness hollowness haleness hellions hellenize halons
hilliness woolliness chilliness lowliness holiness silliness mealiness oiliness jolliness wooliness jowliness dailiness wiliness lines malines millines beelines clines plainness gluiness oleines lioness fellness relines slyness foulness felines delaines dulness towlines alines illness maleness cholines wholeness lianes salines haleness jawlines coolness villainess vileness soleness realness dailyness fulness guylines valines bowlines fullness dullness tallness bylines wellness kaolines chillness paleness hyalines lins