Meaning & Definition
noun
A person who provides confidential information, often to law enforcement or government agencies.
The police relied on an informer to provide them with crucial details about the drug operation.
Someone who reveals information, especially regarding wrongdoing or illegal activities.
After being pressured by his peers, he decided to become an informer and report their activities to the authorities.
A source of information or notification.
The informer shared insights that helped the committee make a more informed decision.
Etymology
Late Middle English: from inform + -er.
Common Phrases and Expressions
police informer:
A person who secretly provides information to the police about criminal activities.
confidential informer:
An informer whose identity is kept secret from the public.
government informer:
An individual who provides information to government agencies, often regarding criminal or terrorist activities.
Slang Meanings
Snitch
He’s such a snitch; he’ll tell the cops anything.
Rat
Don't be a rat; keep your mouth shut.