▪ cease to exist or be in use: "the tension had completely disappeared"Similardie outdiebecome extinctcease to be/existbe no morecome to an endendpass awaypass into oblivionexpireperishwither awaypeter outfizzle outleave no traceOppositesurvivelive on
▪ be lost or go missing; become impossible to find: "my wallet seems to have disappeared"Similarget lostgo missingbe mislaidbe forgottenbe left behindbe stolenbe taken
▪ abduct or arrest and kill or detain (a person) for political reasons, without making their fate known:"it is estimated that some 7000 people have been disappeared by security forces"
Word Originlate Middle English: from dis- (expressing reversal) + appear, on the pattern of French disparaître.