Lewis & Short

† daemŏnĭăcus, a, um, adj., = δαιμονιακός, pertaining to an evil spirit, demoniac, devilish (eccl. Lat.).

  1. I. Adj.: ratio, Tert. Anim. 46: potentia, Lact. 4, 15.
  2. II. Subst.: daemoniacus, i, m., a demoniac, one possessed by an evil spirit, Firm. Math. 3, 6; Sulpic. Sever. Vit. S. Mart. 18.