vanish

Holly, mistletoe, red berries, ivy, turkeys, geese, game, poultry, brawn, meat, pigs, sausages, oysters, pies, puddings, fruit, and punch, all vanished instantly.

The function f such as f(x)=x² vanishes at x=0.

And as if to prove it, one of his friends was vanished and was never seen again. The guy got in a taxi one night, and no one ever saw him ever again.