Related Clues:

• Stare openmouthed
• Stare stupidly
• Drop one's jaw
• Recover from a sprint
• Stare open-mouthed
• Pant
• Hand-over-mouth reaction
• Breathe with difficulty
• React in horror
• Facial expression
• Reaction of shock
• [I'm shocked!]
• [Horrors!]
• Awe-struck expression
• Shocked look