Often used negatively to describe someone who betrays trust by informing on others. The gang shunned him, calling him an informer.
Pro Tip 2/3
Law Enforcement
Commonly used in crime and legal contexts to describe someone who provides crucial information to authorities. The informer's testimony led to the criminal's arrest.
Pro Tip 3/3
Secrecy Expected
'Informer' implies that the information given is typically expected to be kept secret or confidential. She agreed to be an informer, but her identity was kept anonymous.