resistance, opposition -- (the action of opposing something that you disapprove or disagree with; "he encountered a general feeling of resistance from many citizens"; "despite opposition from the newspapers he went ahead")
opposition, oppositeness -- (the relation between opposed entities)
confrontation, opposition -- (the act of hostile groups opposing each other; "the government was not ready for a confrontation with the unions"; "the invaders encountered stiff opposition")
opposition, opponent, opposite -- (a contestant that you are matched against)
opposition -- (a body of people united in opposing something)
opposition -- (a direction opposite to another)
enemy, foe, foeman, opposition -- (an armed adversary (especially a member of an opposing military force); "a soldier must be prepared to kill his enemies")
Opposition -- (the major political party opposed to the party in office and prepared to replace it if elected; "Her Majesty's loyal opposition")