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

The two of them crashed to the floor, thrashing about.

Even now you can hear him thrashing about under the trees.

I thrashed about and managed to sit up in the bed.

Do not thrash about in your mind so, the voice continued.

She was thrashing about on the floor, fighting for breath.

But already the rushes were thrashing about, trying to free themselves to travel.

You've been thrashing about and moaning for a long time.

The people thrashing about on the surface were also making noise.

He thrashed about in his cage, trying to break out.

Behind him something groaned and thrashed about on the ground.