Suppress the anti - anti is wrong (7)
I believe the answer is:
contain
'suppress' is the definition.
(I know that suppress is a kind of contain)
'anti anti is wrong' is the wordplay.
'anti' becomes 'con' (I've seen this in another clue).
'is wrong' indicates an anagram.
'anti' with letters rearranged gives 'tain'.
'con'+'tain'='CONTAIN'
'the' acts as a link.
(Other definitions for contain that I've seen before include "Keep the lid on" , "Accommodate" , "Keep within limits or have within" , "Hold within, suppress (7)" , "Include - restrict" .)