If you describe something as obscurantist, you mean that it is deliberately vague and difficult to understand, so that it prevents people from finding out the truth about it.
[formal, or written]
I think that a lot of poetry published today is obscurantist nonsense.
Examples of 'obscurantist' in a sentence
obscurantist
`Kintail's an obscurantist, he's a millenarian," said Eileen, guffawing.
Adair, Tom (Intro) THREE KINDS OF KISSING - SCOTTISH SHORT STORIES