A concealing, concealment, hiding, veiling. Antonym: revelation.
My example: Her selective self-revelation was as much an intended obvelation.
Example from Stewart Umphrey, Complexity and Analysis, Lexington Books, 2002, 140:
Since divine revelation is never without obvelation, those bound back to God in inquiry need a hermeneutics to distinguish what belongs to Him from what belongs to the medium of His self-presentation.