Related Clues:

• "No, really!"
• Insistent affirmation
• Truthful
• Unbribable
• ''That's the truth!''
• 'No fooling!'
• Beyond reproach
• ''I'm not kidding!''
• Without guile
• ''No fooling!''
• "No fooling!"
• "I swear!"
• Like some opinions
• 'I'm not lying!'
• 'Really and truly'