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.
moister mister meister mistier missteer moisture master muster mustier mastery mystery misdoer masseter maestri maestro misdraw misdrew
bister roister moister leister mister sister heister waister keister meister hoister lister nester mistier toastier faster suiter coaster vastier ouster aster feaster masseter steer master nastier feistier lustier rooster jester caster fester poster wristier sitter zester yeastier chestier wester waster testier tastier dustier diester zoster sistra austere rouster rustier roaster piaster laster bistre keester oyster pester rester fustier booster mustier coster boaster bistro luster reciter foster gaster hastier jouster pestier gustier keyster visiter easter mystery buster baster quester missteer stere raster paster ester mastery wrester roster ghostier ristra pastier bustier royster kiester juster muster vaster zestier xyster diaster duster taster tester toaster citer wastery chaster shyster yester
moist mist most maist misate misty moste