(sometimes initial capital letter) an official or semiofficial style of writing or saying one thing in the guise of its opposite, especially in order to serve a political or ideological cause while pretending to be objective, as in referring to “increased taxation” as “revenue enhancement.”
Origin: new + speak, coined by George Orwell in his novel, 1984 (1949)
"artificial language of official communication in George Orwell's novel 'Nineteen Eighty-Four,' " 1949, from new + speak. Frequently applied to propagandistic warped English.