Related Clues:

• 'Holy moly!'
• 'Yikes!'
• 'Holy cow!'
• Scornful sound
• 'Wow!'
• Sound of disbelief
• 'Good grief!'
• 'Oh, brother!'
• Skeptical grunt
• "Yikes!"
• "Good grief!"
• 'Unbelievable!'
• "Wow!"
• 'Man!'
• "I don't think so!"