A snitch is a person who informs an authority (such as a parent or the police) of bad behavior. A boy may call his little sister a snitch if she tells his parents he stole a cookie. In a more serious context, a gang member may be called a snitch if he informs the police of an upcoming drug deal. In popular culture, a snitch is almost always presented as a bad person, as indicated by the associated slang: rat, tattle-tale, fink, narc, squealer, stoolie, weasel, and Judas. These are all informal terms; the more standard term is informer. And that snitch is a reporter