1. 震动的：convulsivant 惊厥药 | convulsive 震动的 | convulsive melancholia 癫痫性忧郁症

2. 摇撼的：convulsions 抽搐 | convulsive 摇撼的 | convulsively 痉挛性地

3. 起痉挛的：deprive 夺去,剥夺;使失去(of) | convulsive 起痉挛的 | defensive 防卫的,防备用的,辩护的

1. 突然的;不能自控的;不由自主地
A convulsive movement or action is sudden and cannot be controlled.

e.g. She thought she could never stop until convulsive sobs racked her even more.
要不是自己已经泣不成声，她想她可能永远也不会停下来。

adj

1. affected by involuntary jerky muscular contractions
resembling a spasm

e.g. convulsive motions
his body made a spasmodic jerk
spastic movements

Synonym: spasmodicspastic

2. resembling a convulsion in being sudden and violent

e.g. a convulsive rage
convulsive laughter