Related Clues:

• "Really?"
• 'Definitely!'
• Skeptical remark
• "By all means!"
• Without question
• "Most certainly!"
• 'Who'd a thunk it?!'
• 'No kidding?'
• "Oh, really?"
• 'True'
• End of a proverb on familiarity
• To be sure
• ''No kidding?''
• ''For sure!''
• "For real?"