A person who gives information about any topic we are interested in learning about. The informant may give us the information m response to a structured or unstructured interview, or simply in informal conversation. If we have several contacts with the informant and develop a social relationship of information exchange, we refer to that person as a key-informant.
Any person who communicates information; not an informer.
a person who provides information about his or her culture to the ethnographer or fieldworker.
In field research, a person who is “native†to the social situation being studied, who assists the researcher by providing insider information and serving as a go-between.
the person who lays the information (the charge)
the individual who provides the information found on a death certificate. This person is often the spouse, child or other close relative of the deceased.
A person who gives the court information and who affirms or swears it's true under oath.