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