This birch grove is a very romantic spot for a clandestine rendezvous.

“And now,” he said, after a moment's consideration, “it is fit I should speak to Sir William Ashton; he must know of our engagement. Ravenswood must not seem to dwell under his roof to solicit clandestinely the affections of his daughter.”

Ferhat Mehenni is said to have held many clandestine meetings with Moroccan officials.

Sami and Layla began a clandestine relationship.

He was suspected of being active in a clandestine movement.

Money laundering is, by definition, a clandestine enterprise.