Lewis & Short

vernīlis, e, adj. [verna], of or belonging to a home-born slave (verna), slavish, i. e.,

  1. I. Mean, fawning, servile: blanditiae, Tac. H. 2, 59: corpora, Quint. Decl. 9, 12.
  2. * II. Jesting, pert, waggish: dictum, Tac. H. 3, 32 fin.
    Adv.:
    vernīlĭter, slavishly, servilely: fungi officiis, Hor. S. 2, 6, 108: nimis hoc fit verniliter, i. e. with fawning flattery, cringingly, Caecil. ap. Non. 42, 27: haec ipsa non verniliter, nec figurā, quā, etc., jestingly, jokingly, Sen. Ben. 2, 11, 3.