life-threatening

[ lahyf-thret-ning, -thret-n-ing ]
/ ˈlaɪfˌθrɛt nɪŋ, -ˌθrɛt n ɪŋ /

adjective

endangering life: a life-threatening illness.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for life-threatening