Delirium of one person is called madness. Delirium of thousands of people is called religion.

There's a widespread delirium.

In the throes of delirium, Tom claimed that he was not Tom, but the king of Spain.

We don't help racists to promote their delirium caused by ignorance and stupidity.

It's all part of his narcissistic delirium.

On the inquest it was shown that Buck Fanshaw, in the delirium of a wasting typhoid fever, had taken arsenic, shot himself through the body, cut his throat, and jumped out of a four-story window and broken his neck—and after due deliberation, the jury, sad and tearful, but with intelligence unblinded by its sorrow, brought in a verdict of death "by the visitation of God." What could the world do without juries?