/kon'steuhr nay"sheuhn/ , n.
a sudden, alarming amazement or dread that results in utter confusion; dismay.
[ 1605-15; consternation- (s. of consternatio ). See CONSTERNATE, -ION ]
Syn . bewilderment, alarm, terror, fear, panic, fright, horror.
Ant . composure, equanimity.