Related Clues:

• Hang open
• Show fixation, maybe
• Be wide-open
• Stare in astonishment
• Show amazement
• Stare in disbelief
• Stare slack-jawed
• Go slack-jawed
• Jaw-dropped look
• Stare with a lax jaw
• Open widely
• Look in awe
• Slack-jawed look
• Look of wonder
• Look amazed