jerkingly

/ˈdʒɜrkɪŋli/
adverb
  1. In a sudden, sharp, or uneven way; with abrupt movements.
    • He nodded jerkingly, as if his neck was stiff.
    • The old car moved jerkingly down the bumpy road.
    • The puppet's arms moved jerkingly when the strings were pulled.
Antonyms