Vanish/ˈvænɪʃ/ Definition 1 of 3Pro Tip 1/3Sudden Disappearance Use 'vanish' to express something disappearing quickly and unexpectedly. The car vanished around the corner. Pro Tip 2/3Mystery Emphasis 'Vanish' often implies a mysterious or magical quality to the disappearance. The ancient city seemed to have vanished without a trace. Pro Tip 3/3No Physical Evidence When something 'vanishes', it leaves no physical evidence behind. Her smile vanished as quickly as it appeared.