A person who provides information or secrets to someone, often in secretive or official contexts
Examples:
The detective valued his informant's feedback.An anonymous informant tipped off the journalist.Undercover work often requires finding a reliable informant.
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Informer
/ɪnˈfɔːmə/
Someone who provides information, often secretly, to authorities or organizations
Examples:
The reporter relied on an informer for insider details.An informer tipped off the police about the planned heist.She was branded an informer and avoided by her peers.
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Ways to tell them apart:
An informant is typically a source of information for someone, often associated with undercover work.
An informer is someone who tells or gives information, especially to authorities, about wrongful activities.
Informants are often associated with secrecy and trustworthiness to the person they are informing.
Informers can betray confidence by telling on someone, leading to punitive actions against them.
Remember: an informant maintains a relationship for a broader purpose, while an informer might act out of personal interest or gain.