Answer: thewave

AnswerCrossword Clue
THEWAVEUndulating fans
THEWAVEIt's caused by standing fans
THEWAVECoordinated fan effort at a stadium
THEWAVEUp-and-down fan fun
THEWAVEWhat oscillating fans do
THEWAVEMotion made by fans in a stadium
THEWAVEStand-up routine?
THEWAVEStand-up routine in a stadium?
THEWAVEThousands of fans might do it
THEWAVEMotion of fans in a stadium
THEWAVECrowd activity at a stadium