1. I took a clandestine peek at the price tag on the diamond necklace.
2. The clandestine meetings, the passing back and forth of messages between Lodge and the plotters, the coaxing along of the generals, all had the emotional lift of a strong amphetamine. —Neil Sheehan, A Bright Shining Lie, 1988
3. The CIA's great innovation has been to concentrate in peacetime on covert action—that is, the use of clandestine means to challenge policies and regimes in other countries. —Arthur M. Schlesinger, Jr., The Cycles of American History, 1986
4. And Pym was in London for a conference—no, he wasn't, he was attending a three-day course on the latest methods of clandestine communication in a beastly little training house off Smith Square. —John le Carré, A Perfect Spy, 1986
5. The CIA maintains clandestine operations in many countries.