Definition of "confidante"

Dany’s descent into madness is coming, of that there’s no doubt, especially given that the episode ends with the execution of her confidante Missandei.

2019 May 5, Danette Chavez, “Campaigns are Waged On and Off the Game Of Thrones Battlefield (Newbies)”, in The A.V. Club‎, archived from the original on 28 January 2021

Meanwhile, Sally peels herself from the stage's only prop – a green-velvet confidante – and staggers off into the wings.

1982, TC Boyle, Water Music, Penguin, published 2006, page 20

To Major Smiley, as his friend, his adviser, and his confidante, Adolphus Fitzopal had opened his heart […]

1847, Harriette Smythies, A Warning to Lives: or, the Platonic Lover. A Novel, volume 1, page 107

Henry Wilberforce was one of his few confidantes, certainly the one of longest standing, now that Bowden and Froude were gone and Rogers declined to correspond with him.

1976, Paul Misner, Papacy and Development: Newman and the Primacy of the Pope, page 1

The fortunate confidante is lost in anonymity. He is a character who has always intrigued biographers […] [but] nothing is known about his name or his personal history.

1994 , Ignacio Larrañaga, translated by Jennie M. Ibarra, Brother Francis of Assisi, page 45