DUMBFOUND
Meaning of DUMBFOUND in English
/dʌmˈfaʊnd/ verb
[ vn ] to surprise or shock sb so much that they are unable to speak :
His reply dumbfounded me.
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005