Lewis & Short

jactābundus, a, um, adj. [jacto], tossing to and fro, agitated, stormy (post-class)

  1. I. Lit.: mare, Gell. 19, 1, 1.
  2. II. Trop. boasting, vaunting: homo in Graecae facundiae gloria, Gell. 15, 2, 2.