be struck dumb

be struck dumb

To be rendered speechless or dumbfounded, as due to a great surprise or shock. We were all struck dumb by my father's announcement that he was resigning from the company.
See also: dumb, struck

be struck ˈdumb (with something)

be suddenly unable to speak (because of shock, fear, etc.): We were struck dumb at the sight of three armed soldiers in the kitchen.The witnesses were struck dumb with terror. ▶ ˈdumbstruck adj.: When I found out that I had won first prize, I was dumbstruck.
See also: dumb, struck
References in periodicals archive ?
HAVING listened to the effing and blinding that passes for normal conversation these days, I'm convinced that if swearing was banned then at least 99 per cent of the population would be struck dumb.