Related Clues:

• Slack-jawed feeling
• Leave flabbergasted
• Elicit a 5-Down
• Amazement, plus
• Overwhelming admiration
• Completely impress
• State of shock
• Catch unawares
• Cause one's jaw to drop
• "Star Trek" phaser option
• Feeling of amazement
• Sense of 'wow'
• Gobsmack
• Reverent feeling
• Cause jaws to drop