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.
redenies reddens retenes redness rudeness redons redans reediness readiness retunes retines ratanies retinues ratteens rowdiness ruddiness radons rottenness radians ratines rattens retains retinas routines reattains rootiness routinize ruttiness ratans rutins
denies neotenies redenies dittanies retenes muteness tennies ratanies ketenes botanies tenues dienes dueness taenias tawnies codeines whiteness tenias denes litanies lateness tetanies rudeness tenuis toonies mutinies liteness cuteness nudeness butenes betonies atonies tunnies townies tennis wideness
redeny redan redden redon redone retene