Because Jem hated Joe, he made a tacit smirk every time Joe made a mistake in class.
Tacit: adj. done or make in silence; implied, but not expressed
Note: Hi, everyone. It's been quite a while, I know. Sorry! I got caught up with the start of school. And if I can't get things worked out, posts are going to be less frequent. Well, thanks so much for your patience!