convulsive

adjective
     
con‧vul‧sive [usually before noun]
a convulsive movement or action is sudden, violent, and impossible to control:
a convulsive sob
convulsively adverb:
Con's body jerked convulsively.

Dictionary results for "convulsive"
Dictionary pictures of the day
Do you know what each of these is called?
What is the word for picture 1? What is the word for picture 2? What is the word for picture 3? What is the word for picture 4?
Click on any of the pictures above to find out what it is called.