It became a fixed idea with Mrs. Penniman that he should yet enjoy her brother’s fortune, on which she had acuteness enough to perceive that her own claim was small.
He told her that she had been very cruel, and had made him very unhappy; and Catherine felt acutely the difficulty of her destiny, which forced her to give pain in such opposite quarters.
The letter was beautifully written, and Catherine, who kept it for many years after this, was able, when her sense of the bitterness of its meaning and the hollowness of its tone had grown less acute, to admire its grace of expression.
Then she knew that she had had doubts before— strange suspicions, that were at once vague and acute—and that he had been different ever since her return from Europe: whereupon she tried again to listen to her father, who told a story so remarkably well.
There are no more uses of "acute" in the book.
To see samples from other sources, click a word sense below: as in: acute pain
sharp (a severely negative event) -- often with a rapid onset