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.
churros churrs charros chirrs chiros charrs cheeros chirres cherries cheerios chars cheers chairs charas chirus chores chorus chares choirs shirrs choreas chorizo sherris sherries shris shores shoers shares shiers sheers shears shrews shires sharias
burros churros durrs durras charros ferrous furrows harrows currs cirrous guiros euros kouros murras murrs purrs churrs curios morros surras aurous burrs arrows burrows borrows barrows barrios karroos duros marrows morrows murres narrows cirrose sorrows farrows yarrows
churr churro charr charro charry cherry chirr chirre