dumbstruck

/ˈdʌmˌstrʌk/
adjective
  1. So shocked or surprised that you cannot speak.
    • The team was dumbstruck when they learned they had won the championship.
    • I was dumbstruck by the beauty of the sunset over the ocean.
    • He looked dumbstruck as the car narrowly missed hitting him.
Antonyms
What does "dumbstruck" mean? | whatsthatwordmean | whatsthatwordmean