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.
sharias shariahs shris charas shears shares sherris sherries chars shiers charrs chairs shores chares shirrs sheers shires shoers shrews tiaras charros choreas cheerios cherries chorizo
varias sharias arias rias caries saris paris pariahs norias nairas varies gharris varas ferias dearies yttrias charas auris arris auras arras lauras maras kerrias souaris cerias paries paras naris laris harass kauris raias areas arise diaries wearies shariahs tiaras ras ars
sharia shariah shri share shear