Related Clues:

• 'Whoopee!'
• Excited exclamation
• Palindromic cheer
• 'Awright!'
• Slangy OK
• One-third of a Beatles refrain
• 'Is that so?'
• Cheerleader's shout
• 'Huzzah!'
• "Whoopee!"
• "Uh-huh"
• Informal assent
• Absolutely!
• 'I guess that's true'
• 'Uh-huh!'