Dumbfounded was a colorless word to describe her state of mind.
Captain Price was so dumbfounded that for a moment words failed him.
Then the two withdrew, dumbfounded, to a corner of the room.
I was dumbfounded for the instant, and scarce knew how to act.
I was dumbfounded at this fresh and more intimate glimpse of her.
Jon was dumbfounded when he saw the bolt ricochet ...