"间谍" 的英语单词是 "spy"。来源是来自中文语言中 "间" 和 "谍" 的组合，"间" 意思是 "中间"，"谍" 意思是 "传递信息"。

例句：

The spy was caught trying to steal secrets from the government.

She worked as a spy for the CIA during the Cold War.

He was accused of being a spy and was sentenced to life in prison.