Lewis & Short

fictīcĭus (-tĭus), a, um, adj. [fictus, from fingo],

  1. I. artificial, counterfeit, not genuine, fictitious (post-Aug.): gemmae, Plin. 37, 13, 76, § 199 sq.: vinum, id. 14, 16, 18, § 98: oleum, id. 15, 7, 7, § 24.
  2. II. Feigned, pretended: actiones, Ulp. Regul. tit. 28, 12.
    Adv.: fictīcĭe, in pretence: justi (Hilar.), Anon. ap. Job, 1, 15.