Verboten (9)
I believe the answer is:
forbidden
'verboten' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for forbidden that I've seen before include "Disallowed, banned" , "not 35 [PERMISSIBLE]" , "Verboten, prohibited" , "Proscribed" , "Not allowed, banned" .)