1. disappear, go away, vanish

get lost, as without warning or explanation

Example Sentences:
'He disappeared without a trace'

• disappear
• go away

2. disappear, go away, vanish

become invisible or unnoticeable

Example Sentences:
'The effect vanished when day broke'

• disappear
• go away

3. fell, fly, vanish

pass away rapidly

Example Sentences:
'Time flies like an arrow'
'Time fleeing beneath him'

• fell
• fly

4. disappear, vanish

cease to exist

Example Sentences:
'An entire civilization vanished'

• disappear

5. fly, vanish, vaporize

decrease rapidly and disappear

Example Sentences:
'the money vanished in las Vegas'
'all my stock assets have vaporized'

• fly
• vaporize