Related Clues:

• Response to 'Shall we?'
• But of course
• ''I'm game!''
• Sarcastic assent
• Certainly
• Completely convinced
• Polite response to an invitation
• Having no doubt
• Undeniable
• ''By all means!''
• Gives permission
• 'Why not!'
• ''Certainly!''
• Skeptical acknowledgement
• Unfailing