Usually, the door slides effortlessly along the track to open and close smoothly.

The pilot used the stick to hold the nose wheel off as she smoothly closed the throttles.

It closed smoothly and heavily, like a trap springing shut.

The door closed smoothly behind them, and the lift began to rise.

Perhaps most telling are zippers that fail to close smoothly, instead catching and snagging.

He slowly withdrew his foot and smoothly closed the door until only a crack remained for him to see through.

When they removed the servers from the service disks, the latter closed smoothly.

I want a glove compartment that closes smoothly every time, with a click to die for.

As he went deeper into the rock, the surface closed smoothly over him.

The valve normally closes smoothly when the heart pumps blood out of the left lower chamber to the body.