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.
tresses dresses trusses trasses duresses torses trioses drosses trousseaus diereses diureses terrases diaereses truces terces traces druses torsos trices tarsus tierces drowses derrises dieresis diuresis hydrases terraces diaeresis
heiresses seeresses peeresses duresses dresses presses cresses tresses caresses prosses verses harasses reassess erses reuses heresies phereses crosses cuirasses grasses frasses phoresies creeses uraeuses diaereses whereases diureses trasses wrasses prisses karosses greases morasses brasses pareses boreases grosses diereses resees perses brisses creases cereuses foresees trusses ureases drosses chorusses
tressy tress tres trews tyres truss trues tries treys trass trees tores tires tares dressy dress stress