noun
informant
in-FOR-munt/ɪnˈfɔːrmənt/
A person who supplies information.
The informant gives an officer information about what happened.
Etymology
Shaping developed figuratively into instructing, and the participial ending identifies someone performing that action. An informant supplies knowledge, with a specialized use for someone who passes information to the authorities.
In context
the FBI has let go of key informant Emad Salem, who was deep inside a terrorist cell planning its next attack. Without Salem, the Bureau is flying blind.
More examples
- Researchers interview local informants about the town's history.
- The reporter keeps her informant's name confidential.
- A reliable informant helps the detective find the missing car.
Forms
informant · informants
information noun — Facts or details about a subject.
informer noun — Someone who reports wrongdoing to authorities.