stupefaction

/ˌstupəˈfækʃən/
noun
  1. A state of being so surprised, shocked, or confused that you cannot think clearly.
    • The audience stared in stupefaction as the magician made the elephant disappear.
    • To her stupefaction, she found that her car had been completely covered in pink paint overnight.
    • The news of the sudden earthquake left the whole town in a state of stupefaction.