speechlessness

Then the vividness of the girl's beauty had slowly worked upon him, rendering his speechlessness absolute.

It would cheer me considerably to learn that gobblers occasionally suffer from aphonia or speechlessness.

The Duchess is reduced to speechlessness, and takes refuge in a petrifying stare.

In the moment of stricken speechlessness that followed, the sound of the final smash came softly up from the sidewalk.

The question of what she could do found her relapsed into speechlessness.