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.
tsetse tassets tastes testes testis tsades tzetze testees tsadis testacy daysides diastase
tsetse acetose fests suets zetas setts nests reests pests resets miseats missets keysets rosets wrests guests deceits cosets disseats hests tests gests tzetze setose chastise sets cetes azotise rests faucets bassetts bassets besets knessets possets pesetas reseats quests misseats gussets russets assets cossets zests jests diastase vests tassets geests seats facets wests bests chests
taste tasty test testa testae testee testy tost