Her beauty, which, whilst it had been quiescent, he had praised in jest, had in its animated phases moved him to earnest; and though his seriousness was less than she imagined, it was probably more than he imagined himself.
There are no more uses of "quiescent" in the book.
Show samples from other sources
She is always on the move and busy, but her boyfriend is quiet and quiescent.
Lady Bertram was perfectly quiescent and contented, and had no objections to make.