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
The victim was treated for non-life-threatening injuries at a local hospital, authorities added.
—
Caelyn Pender, Mercury News, 10 June 2026
In the third episode of the Hulu show about twentysomethings pursuing their careers in Manhattan, Davis (Will Angus) attempts to impress AJ (Ella Hunt) by eating seafood despite his life-threatening shellfish allergy.
—Kathleen Perricone, Entertainment Weekly, 10 June 2026
Freedom was pronounced dead at the scene, and Martins suffered life-threatening injuries.
—Wcco Staff, CBS News, 10 June 2026
The victim’s injuries aren’t life-threatening, according to police, and he was reported to be in stable condition at the hospital.
—Harriet Ramos, Fort Worth Star-Telegram, 10 June 2026
See All Example Sentences for life-threatening
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Caelyn Pender, Mercury News, 10 June 2026
In the third episode of the Hulu show about twentysomethings pursuing their careers in Manhattan, Davis (Will Angus) attempts to impress AJ (Ella Hunt) by eating seafood despite his life-threatening shellfish allergy.
—Kathleen Perricone, Entertainment Weekly, 10 June 2026
Freedom was pronounced dead at the scene, and Martins suffered life-threatening injuries.
—Wcco Staff, CBS News, 10 June 2026
The victim’s injuries aren’t life-threatening, according to police, and he was reported to be in stable condition at the hospital.
—Harriet Ramos, Fort Worth Star-Telegram, 10 June 2026
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 12 Jun. 2026.
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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