Obscurantism is the practice or policy of deliberately making something vague and difficult to understand, especially in order to prevent people from finding out the truth. (FORMAL or WRITTEN)
...legalistic ~.
N-UNCOUNT
OBSCURANTISM
Meaning of OBSCURANTISM in English
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012