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life-threatening
01
posing a significant risk to a person's life
Example
Ventricular fibrillation is a life-threatening cardiac arrhythmia.
In a life-threatening situation, he used his knowledge of martial arts to choke the assailant and protect himself.
Surviving a life-threatening illness has put years on him, but it has also given him a greater appreciation for life.
He made a song and dance about his minor headache, acting as if it were a life-threatening ailment.
Delirium tremens can be life-threatening, requiring immediate medical attention.