convulse
thresh
thresh about
thrash
thrash about
slash *
toss ***
jactitate

As the reptile threshed about in its death agony, a curious thing happened.

Graves, who had been threshing about, lay more quietly.

Zulekia screamed with the new pain and began to thresh about in her agony.

His brother threshed about, but the darkness tangled itself about him.

Red spots spread out on the surface as Simmonds threshed about.

You woke me up by threshing about and calling her name.

As though two heavy bodies were threshing about in a struggle down there.

Staggering, he threshed about, a living column of crawling red, helpless to defend himself.

Miss Simmons was threshing about and the nurse couldn't control the arm long enough to get the needle in.

For a time he threshed about, warming himself, then struck out with long quiet strokes.