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.
lippered lappered loppered lipread leopard
capered peppered paupered tapered kippered zippered loppered coopered choppered lappered papered supered coppered diapered lippered chippered perdu preed speared spiered perdy coappeared spored reappeared lipread pried pared spared speered rapiered spired spread appeared vapored peered pored speired
lipper lapper lippier lopper flipper clipper slipper slippery slippier