bêtise

"It was a bêtise, a slip of the pen; I admit you are right," and indifferently I opened Coralie's effusion, smiling over it.

Then she stepped out of one of the windows, called Bêtise to her, and putting her arms about his neck, kissed him.

He remembered again that the flippant young Frenchman had said, "Un ancien curé, qui a fait quelque bêtise."

Said a Frenchman of his adversary, “Il se croit supérieur à moi de toute la hauteur de sa bêtise!”

"Ill-luck is a bêtise," said the great Cardinal Richelieu; and on the long run, I fear, his eminence was right.