in opposition to somebody/something
in opposition (to someone or something)
Opposed or contrary to someone or something; against someone or something. The purpose of our group is to stand in opposition to the corporations planning to move in and destroy local business. Our administration is in vehement opposition to any deal that gives them access to nuclear armaments.
in oppoˈsition to somebody/something
1 disagreeing strongly with somebody/something, especially with the aim of preventing something from happening: Protest marches were held in opposition to the proposed law.
2 contrasting two people or things that are very different: Leisure is usually defined in opposition to work.