Related Clues:

• Have a big mouth?
• Stare in surprise
• React with disbelief
• Be astonished
• One small opening close to one wide opening
• Space race finally is to be wide open
• Appear amazed when source of wine's run out
• Look stupid, in spending a penny
• Keep a grimace back, stifling yawn
• Stare at torn page
• Good mimic to watch in wonder
• Yawn at good copy?
• Look amazed when beast appears after midnight
• Stare in wonder, say, welcoming old man in retirement
• Gown not to have to take off or open wide