He sank straight down, as if a trap door had opened beneath him.

I let her go and she sank straight down on her belly to the bottom of the tank.

He honed his will to a pinpoint of force, stepped forward, and sank straight down into rock.

The Luger stood upright in the soft sand a foot from his hand, barrel sunk straight down.

Kirk's body and his equipment pack were both heavier than water, which meant they would sink straight down, given half a chance.

"Now tell me he didn't sink straight down into the ground here!"

His teeth sank straight through the jacket into the skin of my forearm and I started to shout.

On the other side it sinks straight down.

The floor was sinking straight down under their feet!

Not that she would have cared if the Isles and every soul upon them sank straight into the sea.