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.
roust rust roost rusty roast roset russet roused rosette russety rest roseate reset wrist resit resat reest wrest rosed reseat resite reused roosed wriest wristy raucity risotto
joust roust oust most gusty lost foist busty bust coset moste boost moist phaseout lusty post roost costa ghost guest rusty dost dusty tost gust coast fusty hosta dust musty rust ghosty boast just oast hoist host doest missout toast joist must cost gusto quest lust posit roast roset wost
rouse rousseau rosy rose roose roes reuse eros roues cross frouzy cruse grouse pros proso prossie dross druse truss crouse rows rues crus arose arouse bros brose brosy erose ruse crosse vrouws gross ours prose pross prosy drossy trousseau urus