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.
cursed coursed cuirassed creased crossed cruised curst caressed caroused cruset crazed crosshead corset grossed grassed greased crusade cresset coerced cristae crusado groused creosote crosstie crest crust curiosity crista crusty graced grazed cruzado querist grisette queerest
versed cursed nursed hearsed coursed pursed horsed parsed caressed browsed prosed arced aroused forced bruised roused braised pressed praised creased brassed reissued roosed reused grossed verset grassed pierced arrased horste groused cruised erased harassed chorused rased reraised farced reseed corset reseda drowsed coerced caroused prised irised burseed perused raised pursued dorsad tressed ursid phrased greased crossed rosed cuirassed prissed rearoused sourced dressed tierced trussed worset verste chorussed
curs curse carse curios cures curacy cuirass cruse crus crosse cross cars crissa cressy curious crass course corse cors curassow curies curiosa curries cris cress currs scurries