secretive

In its foregrounding of the prisoners’ own communications, “The Alabama Solution” is a unique collaboration between outside and inside, an investigation conducted away from a secretive administration’s controlling eyes.

Dog fighting is as secretive as it is barbaric.

Its roots lie in the medieval stonemasons' guilds, and members still meet in "lodges" to carry out secretive initiation rituals and ceremonies based on allegories such as the building of King Solomon's Temple.

And when it comes to sleep, many parents today feel as if they have to be secretive if they choose to co-sleep because they’re afraid that the truth will be met with backlash.

The exact number, and their order, is by no means certain however: Kim is very secretive about his family, only introducing his wife to the public after they had been married for some time.