Nabokov Title is a term used to refer to the works of Russian-American novelist Vladimir Nabokov. His most famous works include 'ADA', a novel about a brother and sister who fall in love, 'Pnin', a novel about a professor living in America, and 'Lolita', a novel about a middle-aged man's obsession with a young girl. All three of these titles are three-letter, four-letter, and six-letter words respectively.