verb (v)

• get lost, as without warning or explanation(verb.change)

  Example:
  He disappeared without a trace.
  

  Synonym:
  go away, vanish
  Antonym:
  appear
  

  source: wordnet30
• become invisible or unnoticeable(verb.perception)

  source: wordnet30
• cease to exist(verb.change)

  Synonym:
  vanish
  Antonym:
  appear, come along
  

  source: wordnet30
• become less intense and fade away gradually(verb.change)

  Synonym:
  evaporate, melt
  

  source: wordnet30
• To cease to appear or to be perceived; to pass from view, gradually or suddenly; to vanish; to be no longer seen; as, darkness disappears at the approach of light; a ship disappears as she sails from port.(verb)

  source: webster1913