How Do you define Bullying? Below is Wikipedia definition

Bullying is the use of force or coercion to abuse or intimidate others. The behavior can be habitual and involve an imbalance of social or physical power. It can include verbal harassment or threat, physical assault or coercion and may be directed repeatedly towards particular victims, perhaps on grounds of class, race, religion, gender, sexuality, appearance, behavior, or ability.[2][3] If bullying is done by a group, it is called mobbing.[4] The victim of bullying is sometimes referred to as a "target".