(1):

(a.) Attended or beset with danger; full of risk; perilous; hazardous; unsafe.

(2):

(a.) Causing danger; ready to do harm or injury.

(3):

(a.) Reserved; not affable.

(4):

(a.) In a condition of danger, as from illness; threatened with death.

(5):

(a.) Hard to suit; difficult to please.