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.
cruse crouse cruise crus carouse curse corse carse crosse creese crease grouse course coarse carious cars cris curs cors curious crews coirs cures croze craze currs gorse cross gurus cares cries cress carrs crows kurus craws grues cores crass caries curios coerce curies cressy crissa grease creasy kersey caress cooers carries corries cuirass curiosa curries cowries carassow curassow gars kirs kors kris
ruse peruse druse cruse ceruse birse corse rase frise brose varus horsey carse xerus crouse jersey gyrase bruise pursue grues gyrose purse pareus erose cirrous bursae erase perse rise terse chirus urus serous urase trues rerose torus torous grouse hydrase gyrus curse nairus praus crus rearouse course morose gurus rues cerise rerise prise morse cereus kurus cirrose rose aurous arse parse hearse gorse marse kersey sorus porose reuse burse prese prase porous horse carouse ferrous rouse hoarse bourse aureus coarse arise parous cirrus cruise verse nurse prose arose arouse cerous phrase virus hydrous torose torse truce truss ursae worse chorus