psst

1. Psst is a sound that someone makes when they want to attract another person's attention secretly or quietly. 为引起人的注意隐秘或轻声发出的声音

"Psst! Come over here!" one youth hissed furtively. “Psst！过来！”一个年轻人鬼鬼祟祟地发出嘶嘶声。