noun

activist

Someone who works to bring about social or political change.

The housing activist organizes neighbors to demand safer apartments.

Etymology

Active supplies the idea of taking action, and -ist identifies someone engaged in it. An activist pursues a cause through practical effort aimed at changing social or political conditions.

More examples

  • Student activists petitioned the university to change its policy.
  • An environmental activist speaks at the town meeting.
  • She became an activist after her neighborhood lost its clinic.

Forms

activist · activists

activism noun — Organized effort to bring about social change.

Similar words

advocate
May argue for a cause without organizing direct action.
campaigner
Emphasizes sustained work toward a particular goal.