to cease to be seen; vanish from sight.
to cease to exist or be known; pass away; end gradually: One by one the symptoms disappeared.
1. Disappear, fade, vanish suggest that something passes from sight. Disappear is used of whatever suddenly or gradually goes out of sight: We watched him turn down a side street and then disappear. Fade suggests a (complete or partial) disappearance that proceeds gradually and often by means of a blending into something else: Colors in the sky at sunrise quickly fade. Vanish suggests complete, generally rapid, and often mysterious disappearance: A mirage can vanish as suddenly as it appears