When a horse suddenly runs away, with or without a rider.

He did not want to push on in the darkness and risk missing something important or suddenly running out of power.

With each family, came numerous children until the classrooms were suddenly running over.

All the men who are running down the pier suddenly stop in their tracks.

When he got to his car, George suddenly ran out of the house to join him.

Then, to their surprise, the animal suddenly ran out of the room.

Obviously we're not going to suddenly run dry of oil.

Suddenly running the club successfully seemed to be the most important thing in her life.

The end comes rather abruptly, too, as if she had suddenly run out of steam.

He couldn't understand why they were suddenly running over the sand.