Answer:
excessive ambition
Step-by-step explanation:
In "The Tragedy of Macbeth" by William Shakespeare, Macbeth's tragic flaw is excessive ambition. In Act I, Scene III, Macbeth is returning victorious from the battlefield. The weird sisters meet him. He learns by them that he is to become Thane of Cawdor and that he will be king. These words fill him with joy because he is an ambitious man. The tragic hero has a tragic flaw that will bring his downfall. Macbeth's tragic flaw is excessive ambition.