con·fi·dant (kŏn'fĭ-dānt', -dänt', kŏn'fĭ-dānt', -dänt') n.
One to whom secrets or private matters are disclosed.
A character in a drama or fiction, such as a trusted friend or servant, who serves as a device for revealing the inner thoughts or intentions of a main character.
[French confident, from Italian confidente, from Latin cōnfīdēns, cōnfīdent-, present participle of cōnfīdere, to rely on; see confide.]