Still less could Levin say that he was a knave, as Sviazhsky was unmistakably an honest, good-hearted, sensible man, who worked good-humoredly, keenly, and perseveringly at his work; he was held in high honor by everyone about him, and certainly he had never consciously done, and was indeed incapable of doing, anything base.
There are no more uses of "persevere" in the book.
Show samples from other sources
We will persevere through these difficult times. Better days are ahead.
Despite an injured ankle, she persevered in overtime to help her team win.