Lewis & Short

1. gĕnŭīnus, a, um, adj. [geno, gigno], innate, native, natural.

  1. I. Lit. (rare but class.): genuinae domesticaeque virtutes, * Cic. Rep. 2, 15, 29: naturales et genuini honores, Gell. 2, 2, 9: pietas, Dig. 43, 28, 3, § 4: nequitia, App. M. 9, p. 230.
  2. II. Transf., genuine, authentic (post-class.): comoedia Plauti, Gell. 3, 3, 7.