Related Clues:

• 'Wahoo!'
• Internet giant that recently fought Microsoft's hostile takeover attempt
• Motivation exclamation
• 8-Across' shout
• Internet giant with an exclamation point in its name
• When doubled, ardent
• Rooting word
• Booster's cry
• "Yay team!"
• Boorish bloke
• Sound when the home team scores
• 'Joy!'
• Cheery word?
• Cry that's a laugh backward
• Joyous shout