survivalist
: a person who advocates or practices survivalism; especially : one who has prepared to survive in the anarchy of an anticipated breakdown of society
— survivalist adjective
Survivalism is a commonly used term for the subculture or movement of people anticipate and make preparations for a future disruption in local, regional or worldwide social or political order. Survivalists often prepare for this anticipated disruption by learning skills (e.g., emergency medical training), stockpiling food and water, or building structures that will help them to survive (e.g., an underground shelter). The specific preparations made by survivalists depend on the nature of the anticipated disruption, some of the most commonly anticipated being: