astonishing

Adjective

• so surprisingly impressive as to stun or overwhelm
  • such an enormous response was astonishing
    
  • an astounding achievement
    
  • the amount of money required was staggering
    
  • suffered a staggering defeat
    
  • the figure inside the boucle dress was stupefying
    

• surprising greatly
  • she does an amazing amount of work
    
  • the dog was capable of astonishing tricks
    

Related words

• Synonyms: 
  astounding , staggering , stupefying , amazing