clandestinus

Before that, and perhaps unrelatedly, we have the Latin clam, “secretly, in private”; the m changed to n, which led to clandestinus, “secret, hidden”—and to the work of those who practice legal surreption in the clandestine service.

The Right Word in the Right Place at the Right Time William Safire 2004

Before that, and perhaps unrelatedly, we have the Latin clam, “secretly, in private”; the m changed to n, which led to clandestinus, “secret, hidden”—and to the work of those who practice legal surreption in the clandestine service.

The Right Word in the Right Place at the Right Time William Safire 2004

But after the Council of Trent, which created the impediments of abduction and clandestinity, these thirteen were increased to fifteen; the last hemistich, "si forte coire nequibis", was replaced by "si clandestinus, et impos"; and for abduction was added the hexameter "Raptave sit mulier, loco nec reddita tuto".

The Catholic Encyclopedia, Volume 7: Gregory XII-Infallability 1840-1916 1913