All over the world, people or things have disappeared for no reason.

They could only hope he hasn't disappeared for a long time.

They'd disappeared for good long time before he was old enough to understand why.

She disappeared for a moment and came back with water.

She often disappeared on her own for days at a time.

She disappeared for four days, having become a street person.

If you study history, species have always disappeared for one reason or another.

People could disappear for any or no reason and never be seen again.

Then she simply disappeared from the leader board for two years.

About a million Americans a year see their jobs disappear for good.