The heavy door swung shut with a soft thump behind me.
There was a soft thump as it shoved the drug through his skin.
There was a soft thump from the path a few yards ahead of them.
Her head hit the floor with a soft thump and rolled sideways.
She let go of the stone, which fell with a soft thump into the sand.
The old ship lifted, then settled back down with a soft thump.
The body made a soft thump as it hit the floor.
A bird flew into the window with a soft thump.
They met with a soft thump where her head ought to have been.
He heard a soft thump from the room ahead of him.