life-threatening

Adj.

1.

life-threatening - causing fear or anxiety by threatening great harm; "a dangerous operation"; "a grave situation"; "a grave illness"; "grievous bodily harm"; "a serious wound"; "a serious turn of events"; "a severe case of pneumonia"; "a life-threatening disease" Synonyms: grievous, dangerous, grave, serious, severe

critical, dangerous, grave, grievous, serious, severe