Related Clues:

• 'That must be the case'
• Formal affirmation
• ''Indeed''
• Retort to 'Ain't!'
• 'I speak the truth'
• "I speak the truth"
• Confirmation of a fact
• “Yes, verily”
• "Indeed"
• Overly correct "You are correct"
• "True indeed"
• "True that!"
• Hypercorrect "Yes, indeedy!"