lunatic

If Hawberk knew how I loathe that word “lunatic,” he would never use it in my presence.

And the Countess had to surrender, with an implication that it was the only course open in dealing with a lunatic.

The Earl of Salisbury judged it to be the effusion of a lunatic, but thought it well, nevertheless, to communicate it to the king.

Which of her censors would be wholly unmoved if his room were invaded by a lunatic?

He is now himself called a lunatic, and on returning home behaves as if he were half-crazed.

Possibly this person was a lunatic, whose keeper had been drowned in the Conway Castle.