Article Congress backed — or opposed? (4)
I believe the answer is:
anti
'opposed?' is the definition.
(similar in meaning)
'article congress backed' is the wordplay.
'article' becomes 'an' (indefinite article).
'congress' becomes 'it' (congress can mean sex).
'backed' is a reversal indicator.
'it' in reverse letter order is 'ti'.
'an'+'ti'='ANTI'
'or' is the link.
(Other definitions for anti that I've seen before include "Opposed to followers of Hitler" , "Policy's opponent" , "Negative vote" , "on the other side" , "Hostile" .)