obscurant
adjective
1. Acting or tending to confound, obfuscate, or obscure.
2. Typical of or pertaining to obscurants; obscurantic; obscurantistic.
noun
1. One who acts to confound or obfuscate; an obscurantist.
2. A person who seeks to prevent or hinder enquiry and the advancement of knowledge or wisdom; an agent of endarkenment.
3. An opposer of lucidity and transparency in the political and intellectual spheres.