Nadsat is a fictional register or argot used by the teenagers in Anthony Burgess's novel A Clockwork Orange. In addition to being a novelist, Burgess was a linguist and he used this background to depict his characters as speaking a form of Russian-influenced English. The name itself comes from the Russian suffix equivalent of "-teen" as in "thirteen" (-надцать, -nad·tsat?). Nadsat was also used in Stanley Kubrick's film adaptation of the book.