Related Clues:

• Certainly
• Completely convinced
• Having no doubt
• 'Sure'
• Undeniable
• 'That's right!'
• ''By all means!''
• 'Yep'
• 'Sure thing, pard!'
• 'Got that right!'
• 'Why not!'
• ''Certainly!''
• ''Durn tootin'!''
• Skeptical acknowledgement
• Unfailing