It was generally understood that their abrupt departure was due to Madame Olenska’s desire to remove her aunt from the baleful eloquence of Dr. Agathon Carver, who had nearly succeeded in enlisting her as a recruit for the Valley of Love; and in the circumstances no one had expected either of the ladies to return for the wedding.
There are no more uses of "baleful" in the book.
Show samples from other sources
She looked at him with two unblinking, baleful eyes.
The budget cuts had a baleful effect on education.