dismay

Short definition from Wiktionary

Verb

1. 1
   To cause to feel apprehension; great sadness, or fear; to deprive of energy.
2. 2
   To render lifeless; to subdue; to disquiet.
3. 3
   To take dismay or fright; to be filled with dismay.

Noun

1. 1
   A sudden or complete loss of courage and firmness in the face of trouble or danger; overwhelming and disabling terror; a sinking of the spirits
2. 2
   Condition fitted to dismay; ruin.