Nicholas stopped short; for there was an indescribable expression of placid triumph, mingled with a modest confusion, lingering between the borders of Mrs Nickleby’s nightcap, which arrested his attention suddenly.
While he was thus employed, the closed eyes opened, and on the pale face there came a placid smile.
There are no more uses of "placid" in the book.
Show samples from other sources
a ribbon of sand between the angry sea and the placid bay
I scan their faces, trying to look as placid as possible.