The word "snitch" is a colloquial term that refers to someone who informs on others, particularly in a secretive or sneaky manner. This often involves telling authorities about someone's wrongdoings, particularly in the context of crime or rule-breaking. The term can carry a negative connotation, suggesting betrayal or disloyalty among friends or peers.
The origin of the word "snitch" is believed to come from the late 19th century, possibly evolving from the slang term "snitcher," which originally referred to a person who violated others' trust by disclosing private or secret information. The exact roots are uncertain, but it may also derive from the dialectal English word "snitch" meaning to steal or to take quickly.