0 planned or done in secret, especially describing something that is not officially allowed: --
1 planned or done in secret: --
a clandestine meeting
They have wanted war, they have been waging it upon us for three years, but in a clandestine, hypocritical, roundabout manner.
They're small, representative mobilizations of what is normally an after-hours, clandestine scene.
Excluding those clandestine marriages of which evidence was given.
The economic bustle provided a veneer of economic prosperity that hid the continuing depredations of military attempts to eradicate clandestine resistance.
Notable among these was gambling, whose flexibility and familiarity accommodated many of the constraints of clandestine prison activities.
The bulk of urban party activity migrated to the unions, but activists also worked within a range of clandestine organisations.
The author emphasizes that these should by no means be necessarily characterized as 'clandestine'.
This is partly a story, then, about the clandestine build-ups behind the lines.