Linda Stein coined the term the 4 Bs.
- Bully: A person who targets another, often supported by a group, to intimidate (such as with hurtful rumors using social media) or act aggressively toward another with threats or violent actions.
- Bullied: A person who is the victim of bullying and may suffer depression, social withdrawal, physical injury, addiction, self-harm, and even suicide.
- Bystander: A person who is knowledgeable about unjust acts, such as bullying, and does nothing to prevent the injustice.
- Brave Upstander: A brave upstander joins with others, or stands alone, to protect others from violent circumstances in everyday experiences, such as bullying, or actively engages in promoting the well-being of others to balance inequalities or oppression.