Related Clues:

• Not be deadpan
• Sharp inspiration
• Laugh, perhaps
• Be moved by a stimulus
• Do a double take, say
• Jerk or frown, e.g.
• Startled inhalation
• [Heavens!]
• ("I'm shocked!")
• False __
• 'Go' square in Monopoly, e.g.
• Quick intake of breath
• Reaction of astonishment
• Begin work on
• Astonished reaction