Definition

Noun: A person who commits the act of killing a large number of people, typically in a single event or over a very short period of time.

Usage

The term "mass murderer" is used to describe an individual perpetrator responsible for multiple killings in one incident. It is a specific label within criminology and law enforcement, distinct from terms like "serial killer," which implies killings separated by time.

Examples

• The court identified the shooter as a mass murderer responsible for the tragedy at the shopping mall.
• Historical accounts often describe the tyrannical ruler as a mass murderer.
• The police are investigating the crime as the work of a potential mass murderer.

Advanced Usage

• The term is often used in legal, psychological, and journalistic contexts to categorize a specific type of violent criminal.
• It can be applied both to individuals who act alone and to those who are part of a command structure responsible for a single atrocity.

Variants and Related Words

• Mass murder (n): The act itself of killing many people in a single incident.
  • The attack was an act of mass murder.
• Massacre (n): A brutal slaughter of a large number of people, often synonymous with the event caused by a mass murderer.
  • The village was the site of a terrible massacre.

Synonyms

• Slaughterer
• Butcher (figurative)

Related Phrases

• Spree killer: A person who commits multiple murders in a short time in multiple locations. This is a closely related but sometimes distinct category from a mass murderer, who typically kills in one location.
• Perpetrator of a massacre: A more descriptive phrase for a mass murderer.

Noun

1. a person who is responsible for the deaths of many victims in a single incident