μαίνομαι

And many of them said, He hath a devil, and is mad; why hear ye him?

And they said unto her, Thou art mad. But she constantly affirmed that it was even so. Then said they, It is his angel.

And as he thus spake for himself, Festus said with a loud voice, Paul, thou art beside thyself; much learning doth make thee mad.

But he said, I am not mad, most noble Festus; but speak forth the words of truth and soberness.

If therefore the whole church be come together into one place, and all speak with tongues, and there come in those that are unlearned, or unbelievers, will they not say that ye are mad?