|Origin:||evanir, from Vulgar Latin exvanire, from Latin evanescere; EVANESCENT|
to disappear suddenly, especially in a way that cannot be easily explained:
My keys were here a minute ago but now they've vanished.
vanish without (a) trace/vanish off the face of the earth (=disappear so that no sign remains)
The youngster vanished without a trace one day and has never been found.
The bird vanished from sight.
She seemed to have just vanished into thin air. (=suddenly disappeared in a very mysterious way)
to suddenly stop existing [= disappear]
By the 1930s, the wolf had vanished from the American West.
Public support for the Prime Minister has now vanished.