Gerund noun meaning the act or process of bewildering or astonishing.
Definitionen
The act or process of causing astonishment or great surprise; bewilderment. His dumbfounding of the audience left them silent for minutes.
dumbfoundgerundium / partizip präsens Used attributively in its present-participle form 'dumbfounding'
Definitionen
Causing great astonishment or bewilderment; astonishing. The team achieved a dumbfounding victory against the champions.