obrepticius

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

obreptīcĭus or -tĭus, a, um, adj. [obrepo],

surreptitious, obreptitious (postclass.): petitio, Cod. Just. 3, 6, 3; Cod. Th. 4, 22, 6 (al. obrepta).