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.
trusty trust truest trustee tryst touristy torosity tryste triste turista tourist trussed tourista tarriest teariest drest durst driest tercet direst truced dearest diarist dourest torsade tressed
rusty trusty crusty hurst wurst torosity varsity trust touristy durst porosity curst crust cruset cariosity frusta serosity frosty truest forestay burst wristy rust russety roust curiosity morosity frowsty christy
truss trass trues truce trousseau tressy tress tres druse tars torso torsi torse tors terse tarsi torus