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