'Convulsed' in the Bible
In a moment they die, even at midnight the people are convulsed and pass away; and the strong are taken away without hand.
The waters saw you, God. The waters saw you, and they writhed. The depths also convulsed.
And the unclean spirit convulsed him, shouted with a loud voice, and came out of him.
So they brought him to Him. When the spirit saw Him, it immediately convulsed the boy. He fell to the ground and rolled around, foaming at the mouth.
Having cried out, and convulsed greatly, it came out of him. The boy became like one dead; so much that most of them said, "He is dead."
Even while the boy was coming, the demon slammed him down and threw him into a [violent] convulsion. But Jesus rebuked the unclean spirit, and healed the boy and gave him back to his father.