Определение слова «informant» на английский

noun

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

2. (linguistics, proscribed in the US and Canada) 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.