Related Clues:

• 'For real!'
• ''I kid you not!''
• ''It's true, really!''
• ''It's true!''
• 'No, really!'
• ''Truly!''
• ''That's a fact!''
• 'That's true!'
• 'This is on the level'
• 'Honest to goodness!'
• ''Really and truly!''
• ''That's the truth!''
• 'No fooling!'
• 'That's the truth!'
• "Seriously!"