activist

American  

[ak-tuh-vist] / ˈæk tə vɪst /

noun

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

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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

But even as Steyer undertook his public transformation from investor to climate activist, his firm continued to make decisions out of step with his newfound commitment.

From Los Angeles Times • May 6, 2026

I found online memes from Amar Shergill — a Steyer supporter and activist I respect who formerly chaired the California Democratic Party’s Progressive Caucus — including his charts comparing the Democratic field.

From Salon • May 6, 2026

TM Krishna, prominent Indian vocalist, author and social activist, says: "Elections are about stirring imagination. This is not a verdict against Dravidian politics. It is something else. Vijay offers a new imagination."

From BBC • May 5, 2026

“The boomers are the activist generation. Their new activism is redefining what living longer looks like. I think it’s the younger boomers, the Gen Xers, who are driving this change.”

From MarketWatch • May 4, 2026

Throughout his life, he was a passionate activist, and he participated in some major demonstrations for Native rights.

From "I Can Make This Promise" by Christine Day

Related Words

• combatant
• demonstrator
• fighter
• protester
• rioter