Hush-hush and Quietist

Hush-hush adjective - Not known or meant to be known by the general populace.

Quietist and hush-hush are semantically related. In some cases you can replace term "Quietist" with "Hush-hush", this terms are similar.

Quietist noun - A religious mystic who follows quietism.

Hush-hush and quietist are semantically related. Sometimes you can use "Hush-hush" instead an adjective "Quietist".