Lewis Short
rŭpex (noun M) :
* A rough, uncultivated man; a boor, rustic, clown (ante- and postclass., and mostly in the plur.), Lucil. ap. Fest. s. v. squarrosi, pp. 328 and 329 Müll.; Gell. 13, 9, 5; Tert. Apol. 21 fin.; id. Anim. 6 fin.; in sing., Tert. Pall. 4 (cf. rupico).
Charlton T. Lewis, Charles Short, A Latin Dictionary