Bullying

Bullyng is a term used to describe acts of physical or psychological, intentional and repeated, practiced by an individual (bully - 'dictator'or 'bully') or group of individuals in order to intimidate or harm another individual (or group of individuals) unable (s) to defend himself. There are also the victims / aggressors, or authors / targets, which at times commit aggression, but are also victims of harassment by school class.
There are however alternatives such as harassment, threats, harassment, intimidation, in addition to more informal and involve haze, and various other terms used by the students in various regions.