life-threatening
UK: ˈlaɪfˌθretnɪŋ | US: ˈlaɪfˌθretnɪŋ
adj. capable of causing death or serious harm
adj. posing a significant risk to life
The word "life-threatening" combines "life" (Old English līf, meaning "existence") and "threatening" (from Old English þreatian, "to menace"). The suffix "-ing" turns the verb "threaten" into an adjective. The compound emerged in Modern English to describe conditions or situations that endanger survival, reflecting a logical progression from literal "threatening life" to its current medical and general usage.
The patient was rushed to the hospital with a life-threatening injury.
Climate change is causing more frequent life-threatening weather events.
Smoking is a life-threatening habit that increases cancer risks.
The hikers faced life-threatening conditions during the blizzard.
Early detection can prevent life-threatening complications from the disease.