What does “cynicism” mean?

The meaning of cynic is as follows:

Cynic means that Antisthenes went to talk and debate with people at the stadium in Athens, where he formed the His thoughts and views, and those who initially followed the team were called cynics. Cynics evolved from the views, concepts and life behaviors formed by this sect.

There is another saying that the philosophers or thinkers who pursued this doctrine at that time were very similar to some of the characteristics of dogs in their manners, speech, behavior, and even life attitudes. They abandoned worldly vision and worldly Pursue and judge, and pursue morality that the world does not understand. So people called these people cynics, which means dog-like people. As for whether this title definitely comes from this, academic opinions are not consistent.