Elinor would not contend, and only replied, "Whoever may have been so detestably your enemy, let them be cheated of their malignant triumph, my dear sister, by seeing how nobly the consciousness of your own innocence and good intentions supports your spirits.
There are no more uses of "malignant" in the book.
Show samples from other sources
Gey and his wife, Margaret, had spent the last three decades working to grow malignant cells outside the body, hoping to use them to find cancer’s cause and cure.
Rebecca Skloot -- The Immortal Life of Henrietta Lacks
He hit it [the shark] without hope but with resolution and complete malignancy.