snicker

1. V-I If you snicker, you laugh quietly in a disrespectful way, for example, at something rude or embarrassing. 窃笑; 暗笑

We all snickered at Mrs. Swenson. 我们都暗暗嘲笑斯温森太太。

2. N-COUNT Snicker is also a noun. 窃笑; 暗笑

...a chorus of jeers and snickers. ...一阵嗤笑。