It is true, between ourselves, that M. de Morcerf is one of the most assiduous peers at the Luxembourg, a general renowned for theory, but a most mediocre amateur of art.
At this moment the door of the minister’s box opened, and Madame Danglars, accompanied by her daughter, entered, escorted by Lucien Debray, who assiduously conducted them to their seats.
Meanwhile M. Cavalcanti the elder had returned to his service, not in the army of his majesty the Emperor of Austria, but at the gaming-table of the baths of Lucca, of which he was one of the most assiduous courtiers.
There are no more uses of "assiduous" in the book.
Show samples from other sources
She is an assiduous student who expects to earn A’s.