偷笑

• titter
• laugh in one's beard

例句

1. 乔接电话时，史密斯在偷笑，因为他知道那是一个开玩笑的电话。
   Smith was laughing up his sleeve when Joe answered the phone because he knew the call would be a joke.

近反义词

【近义词】

• 暗笑