life-threatening
adjective
life-threat·en·ing
ˈlīf-ˌthre-tᵊn-iŋ 
-ˌthret-niŋ
: capable of causing death : potentially fatal
a life-threatening disease/condition
The injuries are serious but not life-threatening.
Examples of life-threatening in a Sentence
Recent Examples on the Web
These are all easily life-threatening conditions.
—
Bruce Y. Lee, Forbes.com, 16 Sep. 2025
Inexperienced swimmers should remain out of the water due to dangerous surf conditions, life-threatening rip currents, dangerous shore break, and strong longshore currents.
—Nc Weather Bot, Charlotte Observer, 15 Sep. 2025
Allergens can be life-threatening for children with food allergies.
—Annabelle Canela, Parents, 15 Sep. 2025
The injured person was conscious and taken to Florida Medical Center after suffering a non-life-threatening gunshot wound.
—Devoun Cetoute, Miami Herald, 13 Sep. 2025
See All Example Sentences for life-threatening
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Bruce Y. Lee, Forbes.com, 16 Sep. 2025
Inexperienced swimmers should remain out of the water due to dangerous surf conditions, life-threatening rip currents, dangerous shore break, and strong longshore currents.
—Nc Weather Bot, Charlotte Observer, 15 Sep. 2025
Allergens can be life-threatening for children with food allergies.
—Annabelle Canela, Parents, 15 Sep. 2025
The injured person was conscious and taken to Florida Medical Center after suffering a non-life-threatening gunshot wound.
—Devoun Cetoute, Miami Herald, 13 Sep. 2025
See All Example Sentences for life-threatening
Cite this Entry
“Life-threatening.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/life-threatening. Accessed 16 Sep. 2025.
Copy CitationMedical Definition
life-threatening
adjective
life-threat·en·ing
ˈlīf-ˌthret-ən-iŋ
: capable of causing death : potentially fatal
life-threatening injuries
a life-threatening allergic reaction
life-threatening arrhythmia
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