I’m currently reading The Duke and I and the author is constantly using the word “acerbic”. I had never heard of the word before now and had to google the definition. The word has shown up so much that I’m tempted to go through the book and count its appearances lol.
Have you noticed any authors having favorite words that they use page after page?
JK Rowling used it correctly in one of the HP books. Ron does it, in fact. She knew full well to use it with a boy, though, she knew what she was doing.