'jerkily' definitions:

Definition of 'jerkily'

From: WordNet
adverb
With spasms; "the mouth was slightly open, and jerked violently and spasmodically at one corner" [syn: spasmodically, jerkily]
adverb
With jerking motions; "She rose stiffly, jerkily from the window seat"

Synonyms of 'jerkily'

From: Moby Thesaurus