An automatic rifle is a type of firearm that is designed to fire multiple rounds of ammunition with a single press of the trigger. It is a common weapon used by military personnel and law enforcement agencies. However, there are various synonyms for an automatic rifle that can be used interchangeably. Some of the common synonyms of an automatic rifle include assault rifle, submachine gun, machine gun, and carbine. While some of these synonyms have distinct characteristics, they are all designed to provide rapid fire with minimal human input. Choosing the right synonym for an automatic rifle depends on its purpose and configuration, but they all refer to a powerful and deadly weapon capable of inflicting serious harm.