informant

informant. One who informs against another; esp., one who confidentially supplies information to the police about a crime, sometimes in exchange for a reward or special treatment.

— Also termed informer; feigned accomplice.

citizen-informant. A witness who, without expecting payment and with the public good in mind, comes forward and volunteers information to the police or other authorities.

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词条贡献者

双语律师Terence，国际知名法学院法律专业，擅长翻译各类与油气、资源与采矿业相关的法律文件。