An activist is a person who campaigns for some kind of social change. When you participate in a march protesting the closing of a neighborhood library, you're an activist.

Someone who's actively involved in a protest or a political or social cause can be called an activist. Demonstrations, strikes, and sit-ins are all ways that an activist might work toward the change she believes in. The root word of activist is the Latin actus, "a doing, a driving force, or an impulse." Someone who acts on what she believes is an activist.

Definitions of activist
  1. noun
    a militant reformer
    synonyms: militant
    see moresee less
    Malcolm Little
    militant civil rights leader (1925-1965)
    Elijah Muhammad
    leader of Black Muslims who campaigned for independence for Black Americans (1897-1975)
    Black Muslim
    an activist member of a largely American group of Blacks called the Nation of Islam
    Black Panther
    a member of the Black Panthers political party
    type of:
    crusader, meliorist, reformer, reformist, social reformer
    a disputant who advocates reform
  2. adjective
    advocating or engaged in activism
    synonyms: activistic
    disposed to take action or effectuate change
Word Family