Raisonneur [rez-ə-NUR]
Part of speech: noun
Origin: French, 19th century
1. A person in a play or book embodying an author's viewpoint.
Examples of raisonneur in a sentence
"The character Horace was clearly the raisonneur of the play, speaking the young playwright’s opinions directly to the audience at times."
"Using a raisonneur as a narrator gave the novel an autobiographical feel."