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.
reassure rasure reissuer raser ricer riser razor razer racer rosery rouser rosier racier rosary rooser rezero raiser rozzer
assure reassure chaussure scissure fissure sure reissuer tussur tussore seisure masseur rasure measure leisure caesurae issuer chasseur cesurae
reissue wrasse ureas tress dressy rears greasy grassy grass cressy cress creasy crease crass frass brassy brassie brass areas grease press dress trass tressy urease ras res