Verb
To contract violently and irregulary, as the muscular parts of an animal body; to shake with irregular spasms, as in excessive laughter, or in agony from grief or pain.
To agitate greatly; to shake violently.
Source: Webster's dictionaryThey're Twin-like," Shaunee said. "Hilarious," Erin agreed. "Shut up!" Aphrodite and Stevie Rae said together, which made the Twins convulse into laughter. P. C. Cast
The comedian convulsed the crowd Source: Internet
The muscles in her face convulsed Source: Internet
The spasm convulses her facial muscles Source: Internet
earthquakes convulsed the countryside Source: Internet
The feverish patient thrashed around in his bed Source: Internet