Are you a budding wordsmith? Then Thesaurus Rex is your new best friend! Thesauruses used to be big, clunky books, that were often found covered in dust at the back of any public or academic library reference section. But as more and more people write, these useful books have managed to find a way into the pockets of millions of people. One such entry is Thesaurus Rex by Dictionary.com, an app which promises to help users find the perfect word for any occasion.