Atticus makes an attempt to lecture them about trying to live up their name after being pressured by Aunt Alexandra, who's known to judge families based on how long they live in one place for generations.
This upsets Jem and Scout because it is a strange side of their father that she has never seen before, that's why Atticus returns to his original principle.
(To Kill a Mockingbird- Harper Lee)
Headings and subheadings in a text are used to organize the text neatly, and to have the reader better understand what you are talking about.
Madame Loisel feels that taking the necklace is appropriate to dress for the party. (Hope this helps!)
Since an antonym is an opposite, like a synonym is a similar word, the opposite of aggressive would be meek.