conclaved

Participating in a closed, private, or secret meeting.

[N]oble Rivaulx' shrine, whose frequent tolling bells / Disturbed our holy conclaved monks in hours of fast and prayer, […]

Participating in a closed, private, or secret meeting.

"Brothers, we have a Pope!" Bennelli exclaimed. "But I request that you remain conclaved, until I consult the man whom we elected. I shall return within the hour."

Hidden, secluded.

[D]eathlike silence reigns / Over that conclaved scorn, pride, shame, and dread; […]

[A]fter having sealed his letters, and once his own messages have become invisible for him, sealed, secret, ciphered, conclaved, and have from that point become substitutable, Menalcas naturally makes mistakes in address and confuses the addressees of those to whose houses he sends his letters.