Origin: 1400–50; late ME < L surreptīcius stolen, clandestine, equiv. to surrept(us), ptp. of surripere to steal, (sur-sur-2 + rep-, comb. form of rapere to snatch, rape1 + -tus ptp. suffix) + -īcius-itious
mid-15c., from L. surrepticius "stolen, furtive, clandestine," from surreptus, pp. of surripere "seize secretly," from sub "from under" (hence, "secretly") + rapere "to snatch" (see rapid). Related: Surreptitiously.