Related Clues:

• Old college cheer
• Word of exhortation
• Crowd cheer
• Buoy up
• Motivation exclamation
• 8-Across' shout
• When doubled, ardent
• Rooting word
• Booster's cry
• "Yay team!"
• Sound when the home team scores
• Be a fan, in a way
• Cheery word?
• Cry that's a laugh backward
• Word from the bleachers