Noun
1. 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"2. the relation between opposed entities
3. the act of opposing groups confronting each other;
"the government was not ready for a confrontation with the unions""the invaders encountered stiff opposition"4. a contestant that you are matched against
5. a body of people united in opposing something
6. a direction opposite to another
7. an armed adversary (especially a member of an opposing military force);
"a soldier must be prepared to kill his enemies"8. a political party opposed to the party in power and prepared to replace it if elected;
"Her Majesty's loyal opposition"