Charlie knew the floor was stable, but he could feel it rocking beneath his feet.

The car rocked away beneath the impact, teetered, and started to fall.

Together they tied off the sail as the boat rocked beneath them.

As he increased his stride, more explosions rocked the ground beneath him.

His strokes pounded into her and rocked the bed beneath them.

I moved down to the dock, which seemed to rock beneath me.

I rock and sway beneath the weight above my head.

And even as he spoke the earth rocked beneath their feet.

Others in the room sprawled, too, as the floor rocked beneath them.

She scrambled back into the car in a panic, and it rocked beneath her.