American English

Definition of informant noun from the Oxford Advanced American Dictionary



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  1. 1 a person who gives secret information about someone or something to the police or a newspaper synonym informer a police informant The reporter refused to reveal the identity of his informant.
  2. 2(technology) a person who gives someone information about something, for example to help them with their research His informants were middle-class professional women.
See the Oxford Advanced Learner's Dictionary entry: informant