clandestine
klan-DES-tinadjMeaning done in secret, often because it is not allowed
Memory hook the CLAN’s secret meeting. At midnight the cat clan meets on the rooftop by lantern light, so the dogs below never find out; their meeting is clandestine.
The twins held a clandestine midnight feast in the attic.
In context Because the old king had banned all music, the villagers held clandestine concerts in barns and cellars, with lookouts posted at every door.
Similar secret, undercover, hidden, secretive
Opposite open, public, aboveboard
From Latin clandestinus, “secret,” from clam (secretly).