Related Clues:

• Confounded
• Thrown for a loop
• Thunderstruck!
• Really wowed
• Left speechless
• In amazement
• Thinking 'Gee whiz!'
• Slack-jawed, maybe
• Filled with wonder
• Quite impressed
• Electrified
• Agape, say
• Rendered speechless
• Left dumbstruck
• In a daze