What does it mean to "fluster" someone?

To "fluster" someone means to make them nervous or upset, often through confusion or agitation caused by unexpected circumstances. When a person is flustered, their ability to think clearly or respond effectively may be compromised due to the emotional state induced by the overwhelming situation. This term captures the essence of causing a person to feel discombobulated or out of their comfort zone, which aligns perfectly with the concept of instilling nervousness or upset. When someone is flustered, they might struggle with decisions, lose focus, or feel pressured, ultimately leading to heightened anxiety or discomfort. Understanding this means grasping the emotional and psychological impact of external factors that can disrupt one's composure.