stunned

filled with the emotional impact of overwhelming surprise or shock

• “an amazed audience gave the magician a standing ovation”
• “I stood enthralled, astonished by the vastness and majesty of the cathedral”
• “astounded viewers wept at the pictures from the Oklahoma City bombing”
• “stood in stunned silence”
• “stunned scientists found not one but at least three viruses”

knocked unconscious by a heavy blow

in a state of mental numbness especially as resulting from shock

• “he had a dazed expression on his face”
• “lay semiconscious, stunned (or stupefied) by the blow”
• “was stupid from fatigue”