Related Clues:

• Rally yell
• Cheerleaders' call
• Urge on
• 'Sis boom bah!'
• Word heard at a pep rally
• Morale booster
• ''Go, team!''
• Sidelines call
• Bit of a cheer
• Cheering cry
• Support one's team
• ''Yay team!''
• Pompon waver's cry
• Pep rally yell
• Cry from the sidelines