Basic English is an English-based controlled language created by linguist and philosopher Charles Kay Ogden as an international auxiliary language, and as an aid for teaching English as a second language. Basic English is, in essence, a simplified subset of regular English. It was presented in Ogden's book Basic English: A General Introduction with Rules and Grammar (1930).
Ogden's Basic, and the concept of a simplified English, gained its greatest publicity just after the Allied victory in World War II as a means for world peace. More recently, it has influenced the creation of Voice of America's Special English for news broadcasting, and Simplified Technical English, another English-based controlled language designed to write technical manuals. What survives today of Ogden's Basic English is the basic 850-word list used as the beginner's vocabulary of the English language taught worldwide, especially in Asia.