Napoleon had commanded that once a week there should be held something called a Spontaneous Demonstration, the object of which was to celebrate the struggles and triumphs of Animal Farm.
The sheep were the greatest devotees of the Spontaneous Demonstration, and if anyone complained (as a few animals sometimes did, when no pigs or dogs were near) that they wasted time and meant a lot of standing about in the cold, the sheep were sure to silence him with a tremendous bleating of ’Four legs good, two legs bad!’
There are no more uses of "spontaneous" in the book.
Show samples from other sources
The group broke into spontaneous laughter.
He bubbled with enthusiasms, and his faintest smile or lightest laugh seemed spontaneous and genuine.