Related Clues:

• 'Let's roll'
• Free from doubt
• -
• ''I knew it!''
• Pro vote
• With 45-Across, emphatic assent
• 'Follow us!'
• 'You've got a deal!'
• 'That'd be fine'
• 'Why not?!'
• Slangy OK
• One-third of a Beatles refrain
• 'Is that so?'
• 'You got it'
• Doubtless