Extremely surprised and unable to speak because you cannot believe something.
She was dumbfounded by his sudden proposal.
The news left him completely dumbfounded and unsure of what to do.
Frequently Asked Questions
The phonetic transcription of "dumbfound" is /dʌmˈfaʊnd/ in British English and /dʌmˈfaʊnd/ in American English. Click the 🔊 button to hear both pronunciations.