Related Clues:

• 'Good going!'
• 'Uh-huh'
• 'You bet!'
• Slangy approval
• 'Why not?'
• Enthusiastic response
• 'You said it!'
• 'Indeed!'
• 'You betcha!'
• '___, right!'
• Part of a Beatles refrain
• 'Right on!'
• OK
• 'Let's do it!'
• Encouraging word