A meeting in a hidden location is an example of clandestine.
Betsy's clandestine research about Julie, such as it was, was shared only with me.
Little was said of our clandestine activities of the past year as we simply enjoyed each other's company.
The problem isn't your staying her; it's this whole clandestine meeting.
The fact it's clandestine is vital.
He logged into the computer and clandestine website, sending Damian an urgent message.