Bullying is aggressive physical contact, words or actions to cause another person injury or discomfort. Cyberbullying uses an electronic device for acts such as threatening emails. Bullying is a pattern of harming and humiliating others who are weaker or more vulnerable. Learn about the psychological features of bullies and victims, the harmful consequences of bullying, and how to handle a bully or stop cyberbullying. CDC defines bullying as any unwanted aggressive behavior (s) by another youth or group of youths, who are not siblings or current dating partners. It involves an observed or perceived power imbalance, and is repeated multiple times or is highly likely to be repeated. Bullying is an aggressive behavior toward another person. Learn more about the different types of bullying and some reasons a person might bully another.