Related Clues:

• 'Well, well!'
• 'Oh, really?'
• Word of agreement
• 'Of course'
• 'I'm impressed!'
• Word before 'I don't know'
• 'Goodness!'
• ''Wow!''
• Sound of surprise
• 'Absolutely!'
• ''Amazing!''
• 'How about that!'
• ''I didn't know that''
• ''I'm impressed!''
• Word said while scratching the head