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.
crista cristae crust grist crest curst corset cariosity crusty cruset curiosity cresset goriest crusado crusade querist cruised creosote grisette crosstie karst crosshead crazed cursed coursed creased crossed cruzado caressed caroused queerest
arista crista tourista turista barista frusta aorist lyrist leariest grist cristae verist first touristy goriest forestay sorriest wriest aristae periostea purist diarist tarriest tourist wrist weariest chariest cheeriest miriest wristy driest firriest teariest priest beeriest aurist merriest leeriest aristo querist mooriest jurist hairiest veriest furriest airiest fieriest eeriest aeriest burriest hoariest triste wariest wiriest charriest christy
cris crissa kris curs curiosa curies crus cruise crosse cross cries cressy crass cress corse cors carse cars carious caries cruse curios curious curse scries