Related Clues:

• No doubt about it
• 'Absolutely!'
• Equivalent of a pitcher's nod to the catcher
• Guaranteed
• But of course
• Sarcastic assent
• Certainly
• Completely convinced
• Having no doubt
• Undeniable
• ''By all means!''
• 'Yep'
• 'Why not!'
• ''Certainly!''
• Skeptical acknowledgement