Related Clues:

• Word of assent
• 'Good going!'
• Cry of delight
• 'Uh-huh'
• 'You bet!'
• Slangy approval
• 'I knew it!'
• Revival word
• You can say that again!
• Prayer word
• It's positive
• Extremist
• Up, as a vote
• Final word
• 'Why not?'