informant

One that gives information.

One who informs against others; an informer.

One who furnishes linguistic or cultural information to a researcher.

Giving form; transmuting matter by communicating to it a form; informing.

One who informs or gives information; an informer.

Synonyms Informant, Informer. Informant is special, relating only to a given occasion: as, who was your informant? Informer may be special or general, relating to one occasion or, more commonly, to a practice or occupation, as implying a habit of informing, or a dishonorable betrayal of knowledge gained in confidence. It has acquired odious associations.

One who, or that which, informs, animates, or vivifies.

One who imparts information or instruction.

One who offers an accusation; an informer. See Informer.