reformist(n = noun.person) crusader, meliorist, reformer, social reformer - a disputant who advocates reform;
is a kind of controversialist, disputant, eristic
has particulars: abolitionist, emancipationist, birth-control campaigner, birth-control reformer, chartist, civil rights activist, civil rights leader, civil rights worker, demonstrator, protester, dry, prohibitionist, conservationist, environmentalist, feminist, libber, women's liberationist, women's rightist, flower child, hippie, hippy, hipster, freedom fighter, insurgent, insurrectionist, rebel, activist, militant, non-resistant, passive resister, preservationist, utopian, anthony comstock, comstock, dix, dorothea dix, dorothea lynde dix, hus, huss, jan hus, john huss, owen, robert owen, girolamo savonarola, savonarola, francis everett townsend, townsend, john wilkes, wilkes
Derived forms verb reform₁, verb reform₅, verb reform₂, noun reformism₁, adjective reformist₁

   reformist(s = adj.all) progressive, reform-minded - favoring or promoting reform (often by government action);
Derived form noun reformist₁

   A reformer. [1913 Webster]