Related Clues:

• But of course
• 'Naturally'
• Sarcastic assent
• Certainly
• Completely convinced
• Having no doubt
• Undeniable
• ''By all means!''
• 'Why not!'
• ''Certainly!''
• Skeptical acknowledgement
• Unfailing
• Free from doubt
• 'That'd be fine'
• 'Why not?!'