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.
diluter dilater dilutor tilter deluder dilator dilatory delator toiletry
fluter polluter saluter diluter dilater filter vaulter siltier halter haltere violater flutier flouter flutter faultier falter kelter welter dilutor eluder melter miltier colluder moulter clouter pelter jolter poulter relater saltier zoolater alter jilter coulter liter plater palter philter belter billeter maltier balloter vaultier guiltier later clutter tilter joltier politer molter bolter elater realter salter milter kilter quilter slater deluder colter shelter