Questions about example sentences with, and the definition and usage of "Triumphalism"

A: That is when you show how happy and proud you are about yourself (triumphalism) and, at the same time, show excessive deference toward someone usually in a superior position. As I don't know the context, it is a bit hard to explain more, but I understand it as being someone's attitude - someone who is really full of themselves for serving or having someone on a team or organization they look up to and treat with a lot of defference.

A: "triumphalism"