be struck dumb

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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
References in periodicals archive ?
The mother-of-two was struck dumb by the horror for more than a year.
As I wrote the words the poor across the board, I faced my students and was struck dumb with a triple realization: that some of them live below the "poverty line"; that no clear definition exists for the words the poor; and that, if I began to pretend that there were, I would be teaching a lie.
Ventriloquist Keith Harris was struck dumb yesterday when he was hit with a four- year ban for drink driving.