danger; dangerous

crisis

to harm; to jeopardize; to endanger; harmful effect; damage

to endanger; to jeopardize; a danger (to life, national security etc)

critical; desperate (situation)

safety and danger; safety

imminent danger (idiom); approaching a crisis

to be critically ill; to be terminally ill

in danger of collapse; in a parlous state; (of person) treacherous

(medicine) in a critical condition