Conspirative

The Protestant church and many of its members were also involved in this conspirative activity. In the 1960s, the leadership of the church made a new, cooperative arrangement with the state, [...]

Source: wiktionary

The intellectuals characterized by conspirative avant-gardism agreed with much of the critique of the non-Marxists, but instead of moving outside the state and th party, they developed a conspirative mentality to work in and around it.

Source: wiktionary

In all capitalist countries the factory cell can operate only as a conspirative organization. Consequently its work, and the work of each member, must be conducted in such a way that the various police agents in the factory should [be unaware].

Source: wiktionary

On 9 March 1983, the cops suddenly stormed the student hostel “Karlshof” in Darmstadt, Alfred-Messel-Weg 10c, our first loss of a conspirative apartment. We only realized the connection in mid-March.

Source: wiktionary