the world > movement > motion in specific manner > irregular movement or agitation > [adjective] > violent or convulsive (13)
Of, relating to, or of the nature of a paroxysm or paroxysms; marked by paroxysms; violent, convulsive.
Of the nature of convulsion; characterized or accompanied by convulsion.
Pertaining to, of the nature of, affected with, or marked by, convulsion (literal and figurative).