theresienstadt, n.All

Theresienstadt (n.) was ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠officially a concentration camp, and the only people who did not know it were the inmates — one did not want to hurt their feelings.