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.
shmears shimmers shammers chimars chimers chambers chimeras chimeres
smears shmears mars marse samaras roamers maimers namers jammers maars comers cameras maras rammers ambers ombers rummers fumers hummers rimers reimmerse homers members cummers simars lumbars tamaris cambers chimeres gammers chimars woomeras dammers womeras timers gummers hammers shammers teemers dimers meres damars seamers mares aimers emmers mimers omers ameers gamers simmers emeers hemmers humerus bombers mummers mimbars rhymers limbers embers bummers embars combers foamers immerse boomers lumbers numbers vomers mammers mairs cymars sambars reamers lambers roomers cumbers dammars rimmers dimmers gomers timbers tamers limmers umbers wommeras daymares chambers chimeras seemers chimers shimmers summers yammers