life-threatening
adjective
- dangerous to life
Wiktionary
adj
Etymology: Etymology tree English life English threatening English life-threatening From life + threatening.
- Potentially fatal.
“The life-threatening illness caused him to be rushed to the hospital, where doctors worked around the clock to save his life.”
“The MoD said the injured men received immediate medical attention and were evacuated by air to the military hospital at Camp Bastion, but three could not be saved. Next of kin have been informed. The other soldiers hurt are not thought to have life-threatening injures.”