Used to describe something that endangers the continued life of the subject.(adjective)
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Use "life-threatening" in a sentence
"Sky News reports that an active serviceman has been arrested and says the injuries are described as life-threatening."
"The victim's injuries were described as life-threatening, and he died early Thursday morning."
"He had received several stab wounds and is in hospital where his condition is described as life-threatening, a spokesman for West Midlands Police said."