convulse

From Wiktionary

Pronunciation[change]

Verb[change]

Plain form
convulse

Third-person singular
convulses

Past tense
convulsed

Past participle
convulsed

Present participle
convulsing

  1. (transitive) If you convulse something, you shake it hard.
    He was convulsed with laughter at the movie.
  2. (intransitive) If you convulse, you have convulsions--unusual, unintentional and hard movements of your muscles.
    This guy's convulsing; I think he's having a seizure!