Lewis & Short

Rĕāte, is, n. (of the same form in the nom., acc., and abl.),

  1. I. a very ancient town of the Sabines, now Rieti, Plin. 3, 12, 17, § 109; Varr. R. R. 3, 1, 6; Liv. 25, 7; 26, 11; 23; Plin. 3, 12, 17, § 109; Sil. 8, 417.
    Hence,
  2. II. Rĕātīnus, a, um, adj., of or belonging to Reate, Reatine: ager, Plin. 3, 12, 17, § 107: praefectura, Cic. Cat. 3, 2, 5; id. N. D. 2, 2, 6; Val. Max. 1, 8, 1: villa, id. 6, 8, 6: asini (which were highly valued), Varr. R. R. 2, 1, 14: montes, id. ib. 2, 2, 9.
    In plur. subst.: Rĕātīnĭ, ōrum, m., the inhabitants of Reate, Cic. Scaur. 12, 27; id. Att. 4, 15, 5; 9, 8, 1; Liv. 28, 45 al.
    Sing.: Quod ego sum Reatinus, Varr. R. R. 3, 2, 3.