a person who tries secretly to obtain information for one country in the territory of another usually unfriendly countrya secret agent posing as a government employee
a secret agent posing as a government employee
agent, asset, emissary, intelligencer, mole, operative, spook, spy, undercover
couriercounterspy, double agent, sleeperinfiltrator, informer, stool pigeonspymaster, superspy
英语同义词词典收录了63618条英语词条，基本涵盖了全部常用同义词或反义词的辨析及翻译，是英语学习的有利工具。