1973, Joseph Heller, Catch 22: A Dramatization Chapter 38 Kid Sister, "Did they disappear him?" "I don’t know." "What will you do if they decide to disappear you?"
(intransitive) To go away; to become lost.
1898, Winston Churchill, The Celebrity Chapter 8, I corralled the judge, and we started off across the fields.... And thus we came by a circuitous route to Mohair,.... My client welcomed the judge … and they disappeared together into the Ethiopian card-room, which was filled with the assegais and exclamation point shields Mr. Cooke had had made at the sawmill at Beaverton.
1927, F. E. Penny, Pulling the Strings Chapter 4, A turban and loincloth soaked in blood had been found; also a staff. These properties were known to have belonged to a toddy drawer. He had disappeared.