Webster’s Revised Unabridged Dictionary · 1913
Convulsive
Con·vul′sive (kŏn·vŭl′sĭv), a. [Cf. F. convulsif.] Producing, or attended with, convulsions or spasms; characterized by convulsions; convulsionary.
An irregular, convulsive movement may be necessary to throw off an irregular, convulsive disease. Burke.