Lewis & Short

dĭcācŭlus, a, um, adj. [dicax].

  1. * I. Talkative, loquacious: amatrix, Plaut. As. 3, 1, 8.
  2. II. Facetious, witty (perh. only in Appul.): puella (with lepida), Ap. M. 2, p. 118, 2: sermo, id. ib. 3, 135, 9.
    Adv.: dĭcācŭlē, keenly, satirically, facetiously: dixerat probrum, Ap. M. 1, p. 106, 20: tractabat lurconem, id. ib. 8, p. 213, 6.