In the conference debate, several ecologists argued that suddenism, a tendency for processes to occur suddenly rather than gradually, better explains the fossil record than gradualism.

The crowd fell silent, of a sudden, when the conductor raised his baton.

He turned his face, sudden, toward the sea.

A sudden came upon the village, bringing fear and confusion.

The suddenness of the storm caught everyone off guard.

The horse bolted on a sudden and the rider struggled to regain control.

During the trip there were several suddens that left everyone startled.

The suddennesses of the power outages during winter taught the community to set up emergency shelters.

The sudden storm forced us to seek shelter beneath the old pier.

Upon a sudden, the shepherd's flock scattered across the hillside.