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.
coursed cursed caroused corset cuirassed crossed groused cruised creased coerced curst caressed crosshead crazed cruset crusade greased grossed grassed cresset cristae creosote crosstie crest crust curiosity crista crusty graced grazed goriest querist
coursed nursed cursed pursed chorused burseed trussed aroused hearsed parsed versed cruised phrased groused caroused irised rearoused horsed erased reused perused rased prosed arrased prised pursued roused sourced rosed ursid bruised chorussed
course cors curs coarse coirs cores corse crouse curassow cures currs curse scours