Related Clues:

• "Oh, snap!" of old
• Posh exclamation
• Suddenly inhale
• Sound of alarm
• Mild exclamation of surprise
• Sharp intake
• Sound at a horror film
• 'Zoinks!'
• "Great Scott!"
• Reaction to shocking news
• Faux-melodramatic gasp
• [I am SHOCKED!]
• Cry from Sesame Street's Sherlock Hemlock
• Mild oath — aged (anag)
• Old cousin of "Heck!"