obscurant >> ˈɒbskjʊr(ə)nt
Definition: [noun] a person who deliberately prevents the facts or full details of something from becoming known; an obscurantist.
Example: he is no pious obscurant wishing for a return to the days when issues were never discussed
Definition: [noun] something used to hinder visibility.
Example: smoke and other obscurants have been used in wars dating back to the ancient Greeks
Definition: [adjective] deliberately preventing the facts or full details of something from becoming known; obscurantist.
Example: the use of obscurant language
Definition: [adjective] having the effect of hindering visibility.
Example: obscurant clouds