In George Orwell's Nineteen Eighty-Four, the fictional language Newspeak attempts to influence thought by influencing the expressiveness of the English language.
In keeping with the principles of Newspeak, all of the words listed here serve as both nouns and verbs; thus, crimethink is both the noun meaning "thoughtcrime" and the verb meaning "to commit thoughtcrime". To form an adjective, one adds the suffix "-ful" (e.g., crimethinkful) and to form an adverb, "-wise" (e.g., crimethinkwise). There are some irregular forms, such as the adjectival forms of Minitrue, Minipax, Miniplenty, and Miniluv (Ministry of Truth, Ministry of Peace, Ministry of Plenty, and Ministry of Love, respectively – all ministries of the active government in Nineteen Eighty-Four).
To say that something or somebody is the best, Newspeak uses doubleplusgood, while the worst would be doubleplusungood (e.g., "Big Brother is doubleplusgood, Emmanuel Goldstein is doubleplusungood").
Read more about Crimestop: Bellyfeel, Blackwhite, Crimethink, Duckspeak, Goodsex and Sexcrime, Ownlife, Prefixes, Suffixes, Unperson, Other Newspeak Words, Words Incorrectly Attributed To Orwell's Newspeak