spasmodic

Adjective

• occurring in spells and often abruptly
  • fitful bursts of energy
    
  • spasmodic rifle fire
    

• affected by involuntary jerky muscular contractions; resembling a spasm
  • convulsive motions
    
  • his body made a spasmodic jerk
    
  • spastic movements
    

Related words

• Synonyms: 
  fitful , convulsive , spastic