DictionaryconvulseViolent shaking
verb

convulse

kuhn-VUHLS/kənˈvʌls/

To shake violently beyond normal control.

A caregiver stays nearby as the adult convulses on the floor.

Educational depiction of an adult having sudden involuntary shaking while seated safely on floor with caregiver nearby, restrained no gore.
Etymology

The Latin combination meant pulling this way and that or wrenching. That violent tugging image carries into sudden, involuntary contractions that make a body shake.

In context

1221 Manhwa Recap232:12
A ghastly scream tore the air, the death-by-a-thousand-cuts agony making his whole body convulse.
My Skill Was Rated ZERO Stars. So I Cast It 100,000 Times.—Weakest Mage → God of Fire.

More examples

  • The sudden seizure caused his body to convulse.
  • Violent coughing convulses his whole body.
  • Her shoulders convulsed with uncontrollable laughter.

Forms

convulse · convulses · convulsed · convulsing

convulsion noun — A sudden, violent, involuntary muscular contraction.

convulsive adjective — Marked by sudden, uncontrollable muscular movements.

Similar words

shake
Can describe mild or deliberate movement, unlike uncontrollable convulsing.
shudder
Usually describes a brief shake from cold, fear, or disgust.