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.
fumer fumier foamer foamier femur vomer femora fimbria fimbriae
fumer emeer gummier chimer foamier maimer boomier timber namer gammer member summery bummer humeri cumber rumor limier omber ember foamer emery camber rammer humor homer loamier hammier mummer yammer shimmery chimere woomera tumor tamer dimer somber seamier rummer shammer jammer womera lamer doomier simmer roomer emmer reamer comber rimer gamer rimmer gomer vomer hammer hemmer gummer gemmier rammier camera ameer aimer bomber omer limmer seamer cummer boomer beamier dammer mimer gammier number timer mere mammer fumier chimera lamber homier hummer lumber jammier roamer gamier rimier comer rhymer amber roomier smear dumber limber wommera shimmer mummery rummier seemer summer dimmer teemer umber chamber chummier shmear yummier