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1.
very, very good. from Orwell's "1984." as opposed to "plusgood," which means very good, and "good," which simply means, "good."

From a fictitious language called "Newspeak." Using Newspeak instead of English was supposed to prevent "thoughtcrime." (q.v.)
Oh, they renewed the Patriot Act? Doubleplusgood!
by Susie Asado May 22, 2006
44 3
 
2.
Something extremely good, replacing "awesome, sweet, extravegant, fabulous, amazing" etc. or any positive description in the english language. This was a phrase commonly used in the book 1984 by George Orwell.
Person A:"I got out of work early today"
Person B:"That's double plus good!"
by digiSAK3 August 17, 2006
20 9