Thucydidii

Thūcydĭdes, is, m., = Thoukudidês, a celebrated Greek historian, Cic. Or. 9, 30 sq.; 65, 219; id. Brut. 83, 287 sq.; id. de Or. 2, 13, 56; Quint. 10, 1, 73. — Hence, Thūcydĭdīus, a, um, adj., of or belonging to Thucydides, Thucydidian:

genus (orationis),

Cic. Opt. Gen. 6, 16. — Subst. plur.: Thūcydĭdĭi, ŏrum, m., imitators of Thucydides, Cic. Or. 9, 30.