reformist
n. C1 Advanced US //ɹɪˈfɔɹmɪst// UK //ɹɪfˈɔːmɪst// re·formist
n. a person who wants to change a system or society to make it better. They usually support small, slow changes rather than a complete revolution.
n. a person who advocates for the improvement of an existing system or institution through gradual, incremental changes rather than radical overhaul.
The reformist proposed a new tax system to help the poor.
While the radical faction wanted to abolish the monarchy, the reformist focused on modernizing the legal system from within.
The reformist's primary goal was to introduce transparency into the bureaucratic process without dismantling the entire administrative framework that had served the state for centuries.
From reform + -ist. Originated around the end of the 16th century.