clandestine

• The assembly of this important night was in some degree clandestine, the design of treaty not being yet openly declared and when the Whigs returned to power was aggravated to a charge of high treason; though, as Prior remarks in his imperfect answer to the Report of the Committee of Secrecy, no treaty ever was made without private interviews and preliminary discussions. —  Lives of the English Poets: Prior, Congreve, Blackmore, Pope
• The target area is always a trap because your work is clandestine, and by definition you are doing something illegal and will have the whole strength of the local police department against you the moment you make a mistake. —  The Sinkiang Executive
• A single lamp, one of the crude clay bowls that have been used since ancient times, lit the room; the flickering, smoking flame created an eerie illusion of surreptitious movement in the shadows. —  The Mummy Case
• But people who engage in such dangerous, clandestine, and exciting exploits seldom regard them as peccadilloes; and though they may feel fearful while performing them and triumphant when they have finished, they don't feel undignified. —  A Matter of Urgency
• Some say the clandestine is the more dangerous. —  Fighting the Traffic in Young Girls or, War on the White Slave Trade

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