dumbfounded
adjective /dʌmˈfaʊndɪd/
/dʌmˈfaʊndɪd/
(also less frequent dumbstruck
/ˈdʌmstrʌk/
/ˈdʌmstrʌk/
)- unable to speak because of surprise
- The news left her dumbfounded.
- She looked absolutely dumbfounded when I told her what had happened.
- Their disappearance left all the onlookers completely dumbfounded.