Related Clues:

• Word of assent
• Cry of delight
• 'Uh-huh'
• Sincere
• Genuine
• 'You bet!'
• 'Yeah, right!'
• Veracious
• 'I knew it!'
• 'Really!'
• On the up and up
• It's positive
• So
• Set straight
• Up, as a vote