4 adjectives to describe swishings

The motor fell to a drowsily contented murmur that blended with the cool swishing of the tires on wet gravel.

We could hear the chugging of the big guns, and the sorrowful swishing of the shells, as if they were mournful because they were not wreaking more destruction than they were.

Then it was our turn, and after what seemed to me a tremendous swishing and swirling at imminent risk of collision, we swung up to the open port, a line was flung out and made fast, and a moment later Godfrey and I and the other two men were aboard the liner.

Again my ear caught a violent swishing of brush accompanied by a snapping of twigs.

4 adjectives to describe  swishings