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