jerksome--prophetes.ai

jerksome, a. rare.
  (ˈdʒɜːksəm)
  [f. as jerkish a. + -some.]
  = jerky a.

1880 Blackmore Mary Anerley lvii. (1881) 435 With females jolting up and down, upon no springs except those of jerksome curiosity.

Oxford English Dictionary