Related Clues:

• 'Gosh!'
• 'Well!'
• 'I didn't know that!'
• Cousin of 'hmmm!'
• 'My stars!'
• 'Oh dear!'
• 'Heavens!'
• 'That's incredible!'
• Truly
• 'No kidding'
• 'Is that so!'
• 'And how!'
• Comment before 'I don't know'
• 'That's amazing!'
• Opposite of 1-Down