‘Hidden knowledge’ can be revealed and then – in an awkward stretch – be called 'formerly hidden knowledge’, but that would be just as awkward as ‘formally occult’ .
I’ll stick with ‘occult’ for the duration. 
‘Hidden knowledge’ can be revealed and then – in an awkward stretch – be called 'formerly hidden knowledge’, but that would be just as awkward as ‘formally occult’ .
I’ll stick with ‘occult’ for the duration.
