Related Clues:

• Reassurance after a promise
• 'That's a promise!'
• “Scout’s honor!”
• "I swear"
• ''Bet on it!''
• "Seriously!"
• ''You can believe me!''
• "Surprising but true!"
• "Honest to God!"
• "It's the truth, I swear!"
• "Pinkie promise!"
• "Fingers not crossed!"