I swore to her, if ever it crossed my path, to hunt it down; never to let it rest; to pursue it with the bitterest and most unrelenting animosity; to vent upon it the hatred that I deeply felt, and to spit upon the empty vaunt of that insulting will by draggin it, if I could, to the very gallows-foot.
There are no more uses of "animosity" in the book.
Show samples from other sources
I was afraid she would be angry, but she responded without a hint of animosity.
Life appears to me too short to be spent in nursing animosity or registering wrongs.