oxymorus

Etymology
First attested in the 5th century, from, from +

Adjective

 * 1) oxymoronic; of or pertaining to a figure of speech in which two words with opposing meanings are used together intentionally for effect, as in the following:
 * 2) * . Cic. Catil. 1.8.21
 * de te autem, Catilina, cum quiescunt, probant, cum patiuntur, decernunt, cum tacent, clamant.
 * But to you, Catiline, by keeping quiet they approve, by allowing me to speak they vote, by their silence they shout out loud.

Quotations

 * Commentary on the Aeniad of Virgil, Serv. A. 7.295 by M. Servius Honoratius, fl. circa 488
 * "capti potvere capi cum felle dictum est: nam si hoc removeas, erit oxymorum."