HSK 7-9
徘徊
páihuái动
to pace back and forth; to dither; to hesitate; (of sales figures etc) to fluctuate
他在门外徘徊了很久。
Tā zài ménwài páihuái le hěn jiǔ.
He paced outside the door for a long time.
Say it
Hold the button, say it, then let go.
Also free:
Appears across levels (7-9) in the HSK 3.0 word list.