What is the meaning of Informant?

One who relays confidential information to someone, especially to the police; an informer.

A native speaker who acts as a linguistic reference for a language being studied. The informant demonstrates native pronunciation, provides grammaticality judgments regarding linguistic well-formedness, and may also explain cultural references and other important contextual information.

gerund of informar

informer, informant

present participle of informer

third-person plural present active indicative of īnfōrmō

Source: wiktionary.org