progressist
/ˈprəʊɡrɛsəst/ /ˈprɒɡrɛsəst/noun
A person who favours or advocates progress, especially in political or social matters; a reformer, a progressive.
- In political contexts now largely superseded by progressive except in rendering a word with a similar form and meaning from another language..
adjective
Favouring or characterized by innovation or reform; progressive.
Origin
Mid 19th century; earliest use found in The Times. From progress + -ist; in many instances after equivalent terms in Romance languages, as French progressiste, Spanish progresista, adjective and noun, Italian progressista, adjective and noun.