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.
moors mors morse moras mores morays morose moires morros morris morass mirs morassy mars morrows mires murrs meres muras maras mares mures marse mairs maars mbiras murras murres myrrhs marries marrows morceau murreys murries
boors moors doors ors karroos fours roars hoers ours gores boras cores coirs horse hours soras pores horas gorsy worse whores hoars noris yores giaours shoers chores mores morse ores toras horsy corse zoris dors toros tors torsi torus torso loris goers lores noirs sorus mors gorse broos roose tours cors cooers fores lours moras oars boars koras wooers bores karoos torse torrs tores dorrs kors doers dorsa soars sores pours pooris choirs chorus sours shores yours
moor moory mor moira moirai moire mora morae moray more morro morrow