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.
fists feists foists fiestas fasts fests vistas feasts visits fastuous vests vasts fossettes facets ghosts vestas faucets vestees fascitis fasciitis phaseouts
feists hygeists wrists kists lists joists gists whists hygieists fists waists wists cists deists maists hists heists mists hoists shists foists jousts cuestas easts caestus rosets gussets gasts lasts besots pasts pestos posits pastas pests besets vasts boosts visits bastes costs nests oasts jests lawsuits posts toasts wrests cistus cosets cestas bests wests wastes testes tassets assets zests xysts siestas vests reests cestus zits russets knessets roasts resits hests vestas sets sits musts feasts rousts rests basts coasts cossets bassets fiestas ousts pastes hastes masts recits sots possets gusts jesuits hosts mosts beasts leasts fests casts lusts geests missuits suits boasts fasts cysts ghosts castes gestes busts resets gests keysets vistas custos justs roosts missets cestos quests chests hostas xystos xystus deceits dusts tastes tests rusts pistes wasts guests yeasts
fist fast feist feisty fest fiesta fissate foist fusty vista