Antigone: No, they are with me. But they keep their tongues in leash. Creon: Maybe. But you are guilty, and they are not. Antigone: There is no guilt in reverence for the dead. (403-406)
The definition of stubborn is resistant to change one's attitude or position. When Creon insults Antigone for having different views than his own, he is acting Stubborn. His pride is what causes him to be like this. Creon has trouble just hearing Antigone out, which is also a sign of stubbornness, and thinking he knows all the answers. We know he does not know all the answers. In addition, Creon conveys to the audience that he knows it all through his pride and ego: Creon: Sold your soul for some silver; that's all you've done. Sentry: How dreadful is it when the right judge judges wrong! Creon: Your figures of speech.
May entertain you now; but unless you bring me the main,
You will get little profit from them in the end.