Related Clues:

• 'For real!'
• ''I kid you not!''
• "It's the truth!"
• ''It's true!''
• Without question
• ''Truly!''
• ''That's a fact!''
• 'That's true!'
• 'This is on the level'
• 'Honest to goodness!'
• Honestly
• ''That's the truth!''
• 'That's the truth!'
• "Seriously!"
• 'It's the truth'