Related Clues:

• Completely convinced
• 'Absolutely'
• Having no doubt
• 'Sure'
• Undeniable
• 'That's right!'
• ''By all means!''
• 'Got that right!'
• Word of accord
• Ballot option
• 'Why not!'
• ''Certainly!''
• Skeptical acknowledgement
• ''Why, certainly!''
• Unfailing