ethnĭcus

a, um, adj.
I. heathenish, pagan; and subst.: ethni-cus, i, m., a heathen, Tert. Pud. 9; Vulg. Matt. 5, 47; 18, 17.—Adv.: ethnĭce, heathenishly: vivere, Tert. Pud. 9.
Lewis & Short
A Latin Dictionary, 1879
An open-access project