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Informant

//ɪnˈfɔɹmənt// noun

Noun

1
One who relays confidential information to someone, especially to the police; an informer.
"One of her chief informants is Alicent’s handmaiden Talya (Alexis Rabin), whose inside info runs so deep that she’s the first to catch wind of Viserys’ death."
2
a person who supplies information wordnet
3
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. proscribed
"The only material the linguist has to begin with are the informant's grammatical utterances in the target language pronounced arbitrarily in a natural or assigned communicative situation or stimulated artificially by the investigator."
4
someone who sees an event and reports what happened wordnet

From inform + -ant.

Unscramble this word: informant