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.
cirrous cirrus cirrose cerous ceros cires sirras cereus serous ceruse serious sierras sirrees sirrahs sorrows sirs xerus ceres sours sires sorus zeros saros sirees zaires surras cerise sieurs serows cerias zeroes serosa serosae serries soirees souaris surreys
ferrous cirrous borrows burrows farrows ferreous furious furrows burros various curious carouse karroos morros narrows roues serious sorrows torous churros harrows barrows porous carious cerous barrios cirrose rearouse parous morrows aurous grouse crouse marrows vrouws rouse arouse arrows cirrus serous hydrous charros yarrows