Lewis & Short

Ăthēnĭensis, e, adj. [Athenae], of or pertaining to Athens, Athenian: populus, Cic. Fam. 1, 9, 18; Val. Max. 4, 1: civis, Nep. Dion, 8, 1: Themistocles, Cic. Scaur. 2, 3; Varr. R. R. 1, 1, 8; Nep. Milt. 1, 1.Ăthē-nĭenses, ium, m., the inhabitants of Athens, the Athenians, Cic. Fl. 26; id. Off. 1, 22, 75 al.; Sall. C. 2, 2; Nep. Milt. 1, 1; Liv. 31, 44, 9; Mel. 1, 14, 3; Vulg. 2 Macc. 9, 15; ib. Act. 17, 21; 17, 22 et saep.