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.
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ambers numbers umbers ombers embers combers limbers cambers members bombers lumbers cumbers lambers chambers timbers boomers cummers teemers gambirs namers foamers vomers gummers meres bummers gammers rimers gamers gomers tamers summers simmers dammers dimmers shmears shammers chimeres mimbars wommeras limmers umbras roamers timers hombres gambiers aimers mummers maimers reimmerse emmers rimmers dimers seamers tamburs humerus immerse hummers reamers ambeers fumers omers seemers rammers jammers embars smears lumbars rhymers emeers mammers rummers ombres homers comers hammers cameras hemmers sambars roomers mimers ameers timbres samburs womeras woomeras chimeras chimers shimmers yammers