activist

American  

[ak-tuh-vist] / ˈæk tə vɪst /

noun

1. an especially active, vigorous advocate of a cause, especially a political cause.

---

adjective

1. of or relating to activism or activists.

   an activist organization for environmental concern.

2. advocating or opposing a cause or issue vigorously, especially a political cause.

   Activist opponents of the president picketed the White House.

Usage

What does activist mean? An activist is a person who engages in activism—the practice of taking direct action to achieve political or social goals. An activist may support a particular cause (or range of causes) or oppose it. In any case, an activist tries to achieve such goals through direct (and continued) actions, such as protests, lawsuits, lobbying, petitions, and strikes. The word activist implies that the person takes such actions consistently—that they are consistently active in these pursuits. For example, protesting is a form of activism, but someone who attends one protest probably wouldn’t be called an activist (unless they continue to take such actions). The word activist is often preceded by a word referring to the kind of cause the activist is involved in, as in political activist or animal rights activist. It can also be used as an adjective to describe such people or their activities, as in activist lawyer or activist organization. Example: The prominent activist is known for organizing this summer’s mass protests.

Other Word Forms

• nonactivist
  adjective

Etymology

Origin of activist

First recorded in 1905–10; active + -ist

Explanation

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.

Example Sentences

As author and activist Cory Doctorow writes, it makes sense to worry about AI — its false promises, he says, mean society will keep losing or abandoning actual expertise.

From Salon • May 23, 2026

An Oakland-based musician and activist, Riley was confident enough in his identity that he couldn’t be knocked off course.

From Los Angeles Times • May 21, 2026

An activist groom leaves traditional voices of authority—mothers and mothers-in-law—contending with one more decision-maker.

From The Wall Street Journal • May 19, 2026

“I’m going to keep doing my job … whatever activist groups like this think notwithstanding,” Carr said.

From MarketWatch • May 19, 2026

On February 21, 1965, Malcolm X, a civil rights activist and a former leader of the Nation of Islam, an organization of Negro American Muslims, was assassinated in New York.

From "Reaching for the Moon" by Katherine Johnson

Related Words

• combatant
• demonstrator
• fighter
• protester
• rioter