reformer
Definitions
A person who advocates for or works toward the improvement or amendment of what is wrong, corrupt, or unsatisfactory.
A device or apparatus used to change the chemical composition of a substance, typically in industrial processes.
Examples
The social reformer campaigned tirelessly for better working conditions in the factories.
As a dedicated reformer, she sought to overhaul the outdated educational curriculum.
Synonyms
crusader revolutionary advocate of change progressive improver campaigner radical
Antonyms
reactionary conservative traditionalist status quo supporter diehard preservationist opponent of change