antireformer
/ˌæntɪrˈfrɒmər/Definitions
1. noun
A person who opposes or is opposed to reform, especially in a particular institution or system.
“The politician’s stance as an antireformer made it difficult for her to pass legislation.”
2. adjective
Opposed to reform, especially in a particular institution or system.
“The antireformer policies of the government were met with widespread criticism.”